U.S. NATIONAL PERCENT AREA SEVERELY TO EXTREMELY DRY
AND SEVERELY TO EXTREMELY WET
http://lwf.ncdc.noaa.gov/oa/climate/research/2002/aug/uspctarea-wetdry.txt

YEAR/MONTH   DRY   WET
1900  1     16.9   0.0
1900  2     10.0   1.7
1900  3     12.9   2.0
1900  4      9.9   5.8
1900  5     13.2   5.7
1900  6     20.1   5.1
1900  7     19.0   8.3
1900  8     18.1   7.0
1900  9     15.4   9.3
1900 10     16.8  11.2
1900 11     13.7   9.0
1900 12     17.0   4.1
1901  1     17.9   2.2
1901  2     15.7   1.1
1901  3     14.5   1.7
1901  4     12.7   2.3
1901  5     12.0   1.4
1901  6     11.7   1.6
1901  7     16.3   2.9
1901  8     22.4  12.0
1901  9     17.8  12.1
1901 10     23.4   7.0
1901 11     26.7   0.5
1901 12     24.2   4.6
1902  1     27.8   1.7
1902  2     27.5   4.4
1902  3     24.8   4.6
1902  4     29.6   3.5
1902  5     27.2   4.0
1902  6     24.2   4.1
1902  7     19.8   9.4
1902  8     25.8  10.9
1902  9     17.7  10.4
1902 10     18.0  10.0
1902 11     14.4   7.7
1902 12      9.9  11.3
1903  1      9.6   9.2
1903  2      8.0  14.1
1903  3      6.6  12.7
1903  4      6.0   7.9
1903  5      7.3   9.7
1903  6      3.2   6.4
1903  7      2.6  17.3
1903  8      8.1  21.7
1903  9      4.3  20.2
1903 10      6.9  19.0
1903 11      9.0  10.0
1903 12     13.0   8.4
1904  1     12.9   6.2
1904  2     14.9   5.5
1904  3     15.6  14.0
1904  4     17.6   9.2
1904  5     16.2   3.9
1904  6     13.6   7.6
1904  7     12.8  10.3
1904  8      7.5  13.9
1904  9      7.8  18.7
1904 10     10.0  14.5
1904 11     16.5   3.1
1904 12     15.3   2.8
1905  1     11.2   4.0
1905  2      9.7   4.4
1905  3     11.3  10.8
1905  4     14.0  19.4
1905  5      5.6  20.8
1905  6      5.0  25.5
1905  7      5.1  32.3
1905  8      6.6  28.9
1905  9      5.5  19.9
1905 10      2.4  20.6
1905 11      1.8  21.8
1905 12      2.7  22.7
1906  1      1.8  21.7
1906  2      1.9  15.3
1906  3      2.0  19.6
1906  4      2.9  18.8
1906  5      1.0  23.9
1906  6      0.4  25.0
1906  7      0.2  28.4
1906  8      0.8  39.5
1906  9      0.0  35.4
1906 10      0.0  23.9
1906 11      0.2  25.6
1906 12      0.2  33.3
1907  1      0.6  37.2
1907  2      1.0  32.9
1907  3      4.2  29.3
1907  4      1.8  27.8
1907  5      1.0  29.6
1907  6      0.6  31.4
1907  7      0.0  36.5
1907  8      1.2  35.7
1907  9      0.0  34.1
1907 10      0.0  29.0
1907 11      0.0  17.3
1907 12      0.0  13.8
1908  1      0.0  12.4
1908  2      0.0  14.7
1908  3      0.0  11.1
1908  4      0.0  10.2
1908  5      0.4  21.8
1908  6      0.0  18.5
1908  7      0.0  18.6
1908  8      0.0  19.7
1908  9      0.1  15.4
1908 10      4.4  20.7
1908 11     10.8  18.1
1908 12     10.8  13.4
1909  1     10.1  19.2
1909  2      2.7  20.1
1909  3      2.2  17.3
1909  4      1.5  14.0
1909  5      2.1  16.1
1909  6      3.8  16.7
1909  7      2.2  21.9
1909  8      3.1  20.7
1909  9      8.7  19.5
1909 10      9.0  14.1
1909 11      9.4  20.9
1909 12      4.8  25.4
1910  1      2.5  26.1
1910  2      2.0  22.9
1910  3      8.5  11.7
1910  4      8.1   6.7
1910  5      8.5   6.0
1910  6     11.8   2.3
1910  7     18.5   0.7
1910  8     22.6   1.9
1910  9     19.8   2.2
1910 10     23.9   3.2
1910 11     25.3   2.8
1910 12     22.7   2.2
1911  1     24.5   7.0
1911  2     20.8   3.6
1911  3     25.2   4.0
1911  4     18.0   5.5
1911  5     20.2   7.1
1911  6     29.1   8.3
1911  7     26.5   9.2
1911  8     17.5   9.4
1911  9     17.6   4.9
1911 10     12.1   9.1
1911 11      9.5   9.5
1911 12      1.4  10.5
1912  1      1.1   6.8
1912  2      2.1   7.7
1912  3      0.9   9.7
1912  4      0.9  13.0
1912  5      0.9  13.7
1912  6      1.7  14.9
1912  7      0.9  21.8
1912  8      0.0  27.0
1912  9      0.4  26.4
1912 10      0.4  26.4
1912 11      0.4  22.2
1912 12      0.5  18.1
1913  1      0.6  19.9
1913  2      0.8  14.1
1913  3      1.3  19.4
1913  4      1.2  13.4
1913  5      0.9  10.6
1913  6      1.9  12.9
1913  7      3.2  18.3
1913  8      9.2  15.6
1913  9      6.3  14.9
1913 10      2.2  16.4
1913 11      3.2  14.5
1913 12      5.9  16.9
1914  1      4.5  22.7
1914  2      3.2  20.1
1914  3      3.6  12.6
1914  4      3.3  21.3
1914  5      7.1  20.1
1914  6      9.1  21.9
1914  7     13.5  24.2
1914  8      8.4  24.7
1914  9      4.8  13.8
1914 10      4.7  16.0
1914 11      9.9   7.9
1914 12      7.0   8.3
1915  1      4.0  14.5
1915  2      3.8  14.4
1915  3      8.3  15.6
1915  4     14.1  20.6
1915  5      4.4  25.9
1915  6      4.0  26.4
1915  7      2.9  35.5
1915  8      3.5  43.3
1915  9      2.4  43.0
1915 10      2.2  25.4
1915 11      1.4  22.5
1915 12      1.2  23.7
1916  1      0.2  45.7
1916  2      0.4  36.8
1916  3      2.0  32.5
1916  4      1.3  28.6
1916  5      0.9  26.0
1916  6      2.0  33.6
1916  7      0.7  28.8
1916  8      0.0  29.2
1916  9      0.0  23.6
1916 10      0.7  25.3
1916 11      1.3  20.9
1916 12      1.9  22.4
1917  1      2.9  23.4
1917  2      7.0  20.4
1917  3      8.4  19.6
1917  4      5.8  25.2
1917  5      6.5  25.9
1917  6     10.7  25.2
1917  7     10.8  23.5
1917  8      7.2  17.9
1917  9      8.7  15.9
1917 10     10.4   9.8
1917 11     11.8   2.4
1917 12     14.0   4.5
1918  1     14.4   7.6
1918  2     15.6   7.4
1918  3     18.1   4.9
1918  4      9.2   5.2
1918  5     13.7   2.9
1918  6     16.9   2.4
1918  7     19.8   5.4
1918  8     21.4   5.2
1918  9     15.9   5.9
1918 10      7.2   4.9
1918 11      1.5   4.6
1918 12      1.9   3.8
1919  1      0.8   3.2
1919  2      0.2   3.1
1919  3      0.2   4.2
1919  4      0.2   9.8
1919  5      0.9   9.8
1919  6      7.4  14.5
1919  7     10.9  19.8
1919  8     15.1  17.9
1919  9     11.1  16.8
1919 10      0.0  18.6
1919 11      0.4  21.3
1919 12      0.7  18.6
1920  1      1.3  20.6
1920  2     11.9  17.0
1920  3      2.9  17.7
1920  4      0.0  20.0
1920  5      0.5  20.4
1920  6      0.4  23.1
1920  7      0.0  20.9
1920  8      0.0  28.3
1920  9      0.0  24.0
1920 10      0.7  23.1
1920 11      1.3  20.5
1920 12      1.1  14.6
1921  1      1.6  16.4
1921  2      2.0  11.2
1921  3      1.0   6.1
1921  4      0.8   8.4
1921  5      1.9   6.6
1921  6      5.0  11.5
1921  7      6.7  15.5
1921  8      5.0  14.6
1921  9      5.6   5.9
1921 10      5.7   5.1
1921 11      4.3   1.6
1921 12      7.8   3.7
1922  1      3.8   4.1
1922  2      1.8   4.1
1922  3      0.7   4.2
1922  4      1.5   5.7
1922  5      1.0   6.6
1922  6      1.2   9.5
1922  7      2.9  10.1
1922  8      6.6  14.5
1922  9      9.9   0.1
1922 10     10.5   0.4
1922 11      8.9   1.8
1922 12      8.8   1.4
1923  1      7.5   3.3
1923  2      5.1   1.0
1923  3      4.9   2.1
1923  4      4.9   3.9
1923  5      4.6   5.5
1923  6      3.0   6.9
1923  7      4.5  13.0
1923  8      3.8  18.8
1923  9      4.1  18.4
1923 10      3.7  18.5
1923 11      5.2  17.0
1923 12      5.2  22.2
1924  1      5.7  18.4
1924  2      5.7  17.4
1924  3     10.9  19.5
1924  4     10.3  15.8
1924  5     13.4  11.4
1924  6     15.2   8.3
1924  7     16.3   9.0
1924  8     17.1   6.6
1924  9     18.1  10.2
1924 10      7.7   8.6
1924 11     10.9   3.3
1924 12      7.6   6.4
1925  1      5.7   6.7
1925  2     11.1   2.6
1925  3     15.7   1.5
1925  4     19.4   1.2
1925  5     24.1   0.6
1925  6     27.6   1.2
1925  7     22.4   2.0
1925  8     28.8   1.5
1925  9     26.1   2.2
1925 10     11.8   4.0
1925 11      9.5   4.5
1925 12     11.1   3.6
1926  1      4.9   3.5
1926  2      2.1   3.3
1926  3      5.5   6.7
1926  4     11.8   5.8
1926  5     14.4   6.6
1926  6     15.0   4.7
1926  7     17.2  11.5
1926  8     13.3   4.8
1926  9     11.1   8.2
1926 10      9.9   9.8
1926 11      4.8  11.0
1926 12      3.4   8.1
1927  1      7.0   7.6
1927  2      6.0   7.6
1927  3      5.3   5.6
1927  4      5.9  15.4
1927  5      8.3  17.9
1927  6      6.5  18.9
1927  7      5.2  19.6
1927  8      5.0  22.6
1927  9      7.4  24.7
1927 10      4.4  22.0
1927 11      5.4  25.1
1927 12      2.3  25.2
1928  1      4.4  19.1
1928  2      6.0  16.4
1928  3      3.8  12.7
1928  4      2.3  12.4
1928  5      4.3   5.4
1928  6      4.0  16.6
1928  7      6.8  17.1
1928  8      6.8  23.0
1928  9      9.5  19.0
1928 10      4.2  18.3
1928 11      4.1  14.4
1928 12      5.5   9.6
1929  1      5.7  11.9
1929  2      8.8  12.0
1929  3      9.3  11.3
1929  4      1.2  14.2
1929  5      5.2  18.6
1929  6      3.5  15.8
1929  7      5.7  13.5
1929  8      6.4   7.8
1929  9      8.3  10.9
1929 10      9.0  14.5
1929 11     11.5  15.4
1929 12      8.6   9.2
1930  1      7.2  11.4
1930  2      5.2   5.3
1930  3      4.9   4.5
1930  4      6.4   0.6
1930  5      2.6   2.4
1930  6      5.4   2.3
1930  7     17.7   4.1
1930  8     22.9   6.4
1930  9     17.6   4.6
1930 10     15.3   5.2
1930 11     17.8   5.8
1930 12     22.5   3.5
1931  1     25.3   2.0
1931  2     26.7   4.5
1931  3     25.3   7.9
1931  4     26.8   8.2
1931  5     28.7   8.6
1931  6     34.8   6.6
1931  7     34.5   6.9
1931  8     31.4   8.1
1931  9     32.7   4.6
1931 10     31.2   2.9
1931 11     30.4   5.8
1931 12     20.8   6.7
1932  1     12.6   8.0
1932  2     13.6  11.3
1932  3      8.8   8.5
1932  4      7.8   7.3
1932  5      8.5   7.6
1932  6      6.8   9.1
1932  7      9.2  10.3
1932  8      8.4  11.3
1932  9     12.1  12.1
1932 10      5.3   9.8
1932 11      5.3   4.6
1932 12      4.1   7.3
1933  1      5.2   7.1
1933  2      6.1   4.1
1933  3      5.8   1.2
1933  4      1.9   2.3
1933  5      1.9   3.3
1933  6      5.4   2.3
1933  7     11.4   2.4
1933  8     10.1   2.5
1933  9     11.9   1.5
1933 10     12.9   0.9
1933 11     21.2   0.2
1933 12     23.7   1.3
1934  1     29.1   2.2
1934  2     30.0   0.1
1934  3     30.2   0.4
1934  4     40.4   0.1
1934  5     50.5   0.2
1934  6     55.9   0.7
1934  7     63.1   0.9
1934  8     62.0   0.0
1934  9     54.1   0.1
1934 10     53.6   0.1
1934 11     44.3   0.1
1934 12     43.4   0.0
1935  1     39.9   0.9
1935  2     39.1   0.0
1935  3     39.0   0.3
1935  4     26.7   0.5
1935  5      9.8   2.0
1935  6     10.0   9.1
1935  7     12.4   7.1
1935  8     12.6   3.9
1935  9     13.9   6.0
1935 10     15.0   4.3
1935 11     13.8   3.9
1935 12     15.0   4.1
1936  1      8.0   2.1
1936  2      3.4   2.5
1936  3      6.1   3.4
1936  4      8.1   4.4
1936  5     13.9   2.6
1936  6     26.0   2.2
1936  7     38.0   3.2
1936  8     42.9   2.8
1936  9     33.1   1.9
1936 10     26.8   2.5
1936 11     31.8   1.9
1936 12     28.5   2.1
1937  1     20.3   7.4
1937  2     18.5   4.0
1937  3     17.1   5.6
1937  4     14.1   4.2
1937  5     17.1   3.9
1937  6     13.3   5.5
1937  7     15.0   6.8
1937  8     17.3   6.9
1937  9     18.9   3.7
1937 10     18.7   3.8
1937 11     18.5   4.7
1937 12     16.6   3.6
1938  1     14.8   2.0
1938  2     10.7   2.4
1938  3      8.4  10.5
1938  4      8.5   9.4
1938  5      2.2   7.5
1938  6      3.3   7.5
1938  7      3.1   9.3
1938  8      4.2   7.4
1938  9      3.8  10.3
1938 10      8.7   6.3
1938 11      8.2   6.9
1938 12     10.4   4.4
1939  1      7.2   4.0
1939  2      3.1   6.3
1939  3      5.3   3.8
1939  4      8.0   3.5
1939  5     12.6   1.9
1939  6     11.4   3.1
1939  7     14.0   2.3
1939  8     17.6   2.9
1939  9     19.8   4.2
1939 10     24.4   3.1
1939 11     31.9   2.6
1939 12     35.0   0.8
1940  1     34.7   0.4
1940  2     21.3   0.4
1940  3     21.6   1.5
1940  4     10.1   0.6
1940  5     14.4   0.4
1940  6     17.1   0.6
1940  7     21.6   2.0
1940  8     20.4   6.3
1940  9     13.7   1.4
1940 10     16.9   1.4
1940 11      9.9   6.1
1940 12      9.6   6.3
1941  1      8.8   5.7
1941  2     11.5   9.1
1941  3     14.4  14.6
1941  4     10.2  24.4
1941  5     18.0  26.0
1941  6     11.4  29.8
1941  7      7.4  30.6
1941  8      8.6  33.2
1941  9      8.6  36.7
1941 10      7.4  42.1
1941 11      9.9  37.7
1941 12      8.6  37.1
1942  1      9.5  30.4
1942  2      7.9  30.2
1942  3      3.7  23.8
1942  4      6.9  28.4
1942  5      5.8  34.3
1942  6      3.3  37.1
1942  7      2.7  31.3
1942  8      0.9  27.3
1942  9      1.0  27.8
1942 10      0.4  23.9
1942 11      1.0  22.5
1942 12      1.6  27.0
1943  1      1.4  24.2
1943  2      2.8  17.5
1943  3      0.9  17.9
1943  4      1.5   8.4
1943  5      2.2  13.7
1943  6      2.3  18.1
1943  7      5.0  15.8
1943  8      6.9  12.4
1943  9      3.7   3.1
1943 10      3.8   3.3
1943 11      5.3   3.0
1943 12      6.3   0.9
1944  1      8.2   0.5
1944  2      4.4   1.7
1944  3      4.4   2.9
1944  4      1.9   8.7
1944  5      2.9   9.2
1944  6      2.4  13.3
1944  7      5.3  16.1
1944  8      4.9  17.8
1944  9      2.8  10.4
1944 10      5.0   3.6
1944 11      7.0  10.1
1944 12      9.4  10.2
1945  1     10.5   7.6
1945  2      5.8   8.9
1945  3      4.2  12.0
1945  4      3.8  15.4
1945  5      2.0  16.0
1945  6      1.0  21.2
1945  7      0.9  25.2
1945  8      0.9  27.2
1945  9      1.1  32.7
1945 10      0.0  23.1
1945 11      0.8  15.5
1945 12      1.1  13.3
1946  1      0.0  10.6
1946  2      0.0  10.0
1946  3      0.0   7.5
1946  4      0.8   2.7
1946  5      2.0   6.8
1946  6      5.1   6.1
1946  7      7.6   7.5
1946  8      3.7   7.6
1946  9      0.9   7.0
1946 10      0.9  13.2
1946 11      1.3  19.0
1946 12      1.0  15.7
1947  1      1.6  15.1
1947  2      2.0   8.5
1947  3      1.2   5.7
1947  4      4.5   8.0
1947  5      8.2  11.0
1947  6      5.6  22.0
1947  7      7.6  18.3
1947  8      4.0  14.2
1947  9      6.7  11.0
1947 10      5.2  11.3
1947 11      5.1  14.7
1947 12      5.6  10.9
1948  1      7.2   9.3
1948  2      6.2  10.5
1948  3      3.2  12.0
1948  4      2.1   9.8
1948  5      2.8   9.1
1948  6      3.2  10.6
1948  7      3.2  14.5
1948  8      5.3  14.4
1948  9     10.6   7.8
1948 10     11.9   4.8
1948 11      7.4  10.4
1948 12      8.4   9.6
1949  1      2.9   8.8
1949  2      2.2   9.3
1949  3      1.8   7.5
1949  4      2.1   1.1
1949  5      2.5   3.3
1949  6      2.4   9.2
1949  7      2.1  13.1
1949  8      5.2   8.8
1949  9      4.4   5.8
1949 10      4.1   9.1
1949 11      7.4   2.0
1949 12      7.2   0.8
1950  1      3.3   7.3
1950  2      4.8   7.8
1950  3      0.6   7.8
1950  4      3.8   7.8
1950  5      9.8   6.5
1950  6      9.5   6.4
1950  7      3.8   9.7
1950  8      5.1  16.5
1950  9      3.6  20.0
1950 10      9.1  12.1
1950 11      9.3  11.6
1950 12     13.2   7.8
1951  1     12.5  10.4
1951  2     11.8  13.0
1951  3      9.8  11.9
1951  4      7.4  11.2
1951  5     10.5   7.9
1951  6     13.2  10.2
1951  7     15.0  13.2
1951  8     11.0  16.2
1951  9     11.9  15.7
1951 10     11.6  20.1
1951 11     10.1  21.9
1951 12     10.9  23.4
1952  1     12.1  25.5
1952  2      8.6  17.1
1952  3      7.4  21.8
1952  4      4.8  16.6
1952  5      2.2  14.5
1952  6      7.2  10.9
1952  7     10.2  12.5
1952  8     10.1   8.2
1952  9     13.7   4.2
1952 10     21.3   0.0
1952 11     18.2   0.2
1952 12     16.4   0.6
1953  1     13.3   0.3
1953  2     10.2   0.2
1953  3      7.6   1.2
1953  4      7.3   1.5
1953  5      8.4   3.8
1953  6     11.8   7.1
1953  7     12.8   7.8
1953  8     14.0  11.2
1953  9     21.8   2.6
1953 10     23.2   2.0
1953 11     31.2   1.9
1953 12     29.1   2.8
1954  1     21.3   2.9
1954  2     32.2   1.2
1954  3     25.6   0.7
1954  4     31.2   1.0
1954  5     28.4   2.0
1954  6     31.4   2.7
1954  7     44.3   2.5
1954  8     45.1   3.3
1954  9     50.1   4.8
1954 10     40.9   6.2
1954 11     45.8   2.7
1954 12     42.9   3.0
1955  1     39.2   0.8
1955  2     30.6   1.2
1955  3     33.1   2.2
1955  4     32.9   1.3
1955  5     25.4   2.2
1955  6     20.3   0.0
1955  7     19.7   1.7
1955  8     18.8   1.2
1955  9     18.5   1.1
1955 10     21.1   2.0
1955 11     25.2   2.1
1955 12     28.1   5.1
1956  1     29.3  11.1
1956  2     19.1   8.9
1956  3     28.2   6.6
1956  4     26.3   2.5
1956  5     33.5   3.4
1956  6     35.7   3.1
1956  7     34.5   4.3
1956  8     34.8   4.5
1956  9     39.9   2.9
1956 10     40.0   3.3
1956 11     39.5   1.3
1956 12     43.2   0.4
1957  1     33.2   0.3
1957  2     34.9   0.3
1957  3     30.8   1.2
1957  4     15.2   1.5
1957  5      5.5  12.8
1957  6      6.8  18.0
1957  7      7.9  15.7
1957  8      7.9  11.8
1957  9      7.3  13.4
1957 10      3.8  20.3
1957 11      2.3  26.5
1957 12      0.4  17.4
1958  1      0.1  15.0
1958  2      0.1  14.6
1958  3      0.1  20.5
1958  4      0.4  27.1
1958  5      2.1  20.8
1958  6      1.5  20.0
1958  7      1.3  30.1
1958  8      2.1  25.8
1958  9      2.4  25.5
1958 10      4.2  10.3
1958 11      1.1   8.4
1958 12      3.7   2.1
1959  1      3.4   2.6
1959  2      2.7   2.9
1959  3      5.4   2.3
1959  4      9.9   2.0
1959  5     10.1   3.7
1959  6     14.9   1.9
1959  7     17.7   3.2
1959  8     18.2   1.3
1959  9      9.4   3.3
1959 10      4.1  10.4
1959 11      8.4   7.5
1959 12      8.2   6.1
1960  1      8.5   7.9
1960  2      5.1  10.4
1960  3      5.0   9.1
1960  4      7.7   5.0
1960  5      9.8   6.6
1960  6     10.1   5.1
1960  7     11.5   7.0
1960  8     13.0   7.1
1960  9     15.1   6.3
1960 10     13.4   5.8
1960 11      5.5   4.6
1960 12     10.0   5.4
1961  1     14.9   7.0
1961  2     14.9   5.7
1961  3     13.9   6.2
1961  4     13.1   3.2
1961  5     14.2   1.8
1961  6     21.0   3.7
1961  7     20.9   5.8
1961  8     16.9   7.7
1961  9      3.9  12.3
1961 10      4.6   7.2
1961 11      2.8  13.6
1961 12      3.8  11.4
1962  1      5.0  12.1
1962  2      2.1  10.2
1962  3      1.4   4.1
1962  4      3.4   1.0
1962  5      1.1   2.8
1962  6      0.1   2.7
1962  7      2.6  10.8
1962  8      5.2  10.4
1962  9      3.2   8.5
1962 10      4.2   6.1
1962 11      5.0   2.5
1962 12      3.8   1.4
1963  1      7.8   1.3
1963  2      5.4   0.8
1963  3      8.1   0.4
1963  4     10.0   1.0
1963  5     17.7   1.1
1963  6     16.9   4.6
1963  7     17.9   4.7
1963  8     16.8   3.3
1963  9     14.7   3.9
1963 10     27.6   1.4
1963 11     27.7   1.8
1963 12     27.8   0.0
1964  1     27.6   0.0
1964  2     28.3   0.8
1964  3     19.0   0.2
1964  4      7.4   1.8
1964  5     11.4   0.7
1964  6     16.2   1.2
1964  7     22.0   3.4
1964  8     17.1   6.5
1964  9     14.8   3.8
1964 10     21.7   4.9
1964 11     18.3   3.4
1964 12     16.5   8.8
1965  1     11.5   8.6
1965  2      7.5   7.5
1965  3      6.9   4.4
1965  4      5.5   6.0
1965  5      6.6   4.8
1965  6      6.0  13.5
1965  7      7.0  21.6
1965  8      4.5  20.3
1965  9      4.1  31.8
1965 10      5.0  18.2
1965 11      4.7  13.9
1965 12      7.1  19.9
1966  1      5.0  16.5
1966  2      3.4  11.8
1966  3      5.3   6.7
1966  4      3.5   5.4
1966  5      6.7   5.7
1966  6     13.0   5.7
1966  7     15.1   4.7
1966  8     15.2   4.2
1966  9      8.2   3.2
1966 10     10.7   2.0
1966 11      7.1   1.0
1966 12      4.8   0.1
1967  1      5.2   0.3
1967  2      8.1   0.0
1967  3     12.6   0.0
1967  4     13.5   3.7
1967  5     12.7   5.5
1967  6      6.0   7.0
1967  7      5.3  12.2
1967  8      5.7  11.7
1967  9      1.7  10.6
1967 10      1.0   5.8
1967 11      2.7   6.7
1967 12      1.9   9.0
1968  1      1.8   6.5
1968  2      3.3   2.4
1968  3      6.6   3.3
1968  4      3.1   5.2
1968  5      4.4   5.7
1968  6      4.9   8.1
1968  7      5.0  10.4
1968  8      2.0  15.1
1968  9      2.8  11.9
1968 10      4.0   9.5
1968 11      0.6   8.7
1968 12      0.1  14.4
1969  1      0.1  17.9
1969  2      0.5  20.2
1969  3      0.7  12.6
1969  4      0.8  10.1
1969  5      1.4   6.8
1969  6      1.2  10.5
1969  7      0.1  14.5
1969  8      0.0   6.8
1969  9      0.8   4.9
1969 10      0.2  13.2
1969 11      0.2   5.6
1969 12      0.2   8.4
1970  1      0.0   7.9
1970  2      0.0   4.5
1970  3      0.1   6.4
1970  4      0.0   5.2
1970  5      0.0   4.5
1970  6      0.0   4.7
1970  7      1.5   5.1
1970  8      1.8   4.3
1970  9      0.8   7.0
1970 10      1.3   7.6
1970 11      0.6   7.9
1970 12      0.8   7.8
1971  1      1.8   7.9
1971  2      1.4  10.2
1971  3      7.1   6.2
1971  4      8.0   5.2
1971  5     10.3   6.9
1971  6     14.3   7.2
1971  7     13.5   7.1
1971  8      1.6   6.1
1971  9      1.0   9.9
1971 10      0.8  16.7
1971 11      1.4  12.6
1971 12      0.3  12.2
1972  1      0.4  12.3
1972  2      0.4   9.8
1972  3      1.4   9.1
1972  4      3.9   7.2
1972  5      9.9   7.5
1972  6      4.2   9.8
1972  7      6.0  11.4
1972  8      7.6  11.0
1972  9      4.5  10.2
1972 10      0.0  17.1
1972 11      0.0  22.2
1972 12      0.0  27.2
1973  1      0.0  22.9
1973  2      0.0  17.0
1973  3      0.5  32.8
1973  4      1.9  41.6
1973  5      3.1  43.4
1973  6      5.4  37.7
1973  7      6.4  39.9
1973  8      7.6  24.6
1973  9      4.5  29.5
1973 10      3.2  23.3
1973 11      0.2  28.0
1973 12      0.0  29.8
1974  1      0.0  32.0
1974  2      0.0  22.3
1974  3      0.9  16.5
1974  4      1.7  14.7
1974  5      5.9  14.2
1974  6     10.5  10.3
1974  7      7.8   7.0
1974  8      5.0   7.3
1974  9      7.2  14.5
1974 10      1.1  16.1
1974 11      2.8  14.8
1974 12      3.8  14.3
1975  1      1.8  13.9
1975  2      1.8  17.1
1975  3      0.2  21.0
1975  4      0.1  16.8
1975  5      0.0  20.4
1975  6      0.0  21.1
1975  7      0.0  27.6
1975  8      0.2  28.0
1975  9      0.8  27.4
1975 10      1.1  23.9
1975 11      0.0  19.0
1975 12      0.0  13.7
1976  1      2.5  12.3
1976  2      2.7   8.8
1976  3      3.8  10.0
1976  4      2.8   8.3
1976  5      3.0   6.2
1976  6      5.5   8.6
1976  7      5.2   8.9
1976  8      6.8   9.3
1976  9      9.1   9.3
1976 10      8.9  14.4
1976 11     11.0   8.7
1976 12     20.9   5.5
1977  1     27.9   3.7
1977  2     32.4   1.8
1977  3     27.3   4.2
1977  4     30.4   4.3
1977  5     24.2   2.6
1977  6     30.4   2.2
1977  7     32.5   1.6
1977  8     17.7   1.7
1977  9     12.6   3.2
1977 10     13.8   7.1
1977 11     13.8  12.5
1977 12      9.4  11.3
1978  1      4.5  13.6
1978  2      1.3   6.2
1978  3      1.1   9.5
1978  4      2.0  13.6
1978  5      1.3  19.4
1978  6      1.9  13.5
1978  7      5.1  16.5
1978  8      4.4  17.5
1978  9      5.0  17.6
1978 10      4.8   9.5
1978 11      0.6  14.9
1978 12      1.7  16.4
1979  1      0.9  23.5
1979  2      0.0  25.0
1979  3      0.6  22.4
1979  4      0.6  20.8
1979  5      0.6  27.0
1979  6      0.5  23.2
1979  7      2.8  27.4
1979  8      0.2  29.1
1979  9      1.9  19.4
1979 10      0.7  16.1
1979 11      2.4  18.9
1979 12      3.2   9.5
1980  1      2.5  11.2
1980  2      2.6   8.9
1980  3      2.1  16.6
1980  4      2.5  17.1
1980  5      5.2  19.9
1980  6      6.8  16.4
1980  7     10.3  15.7
1980  8      7.8  11.6
1980  9      6.0  12.5
1980 10      2.8   5.1
1980 11      4.9   3.0
1980 12      6.4   1.9
1981  1     17.6   0.2
1981  2     13.9   0.7
1981  3     17.2   0.2
1981  4     25.6   1.5
1981  5     14.0   3.5
1981  6     16.5   4.9
1981  7     13.7   7.5
1981  8     10.7   9.1
1981  9     12.4   4.2
1981 10      5.8  11.4
1981 11      5.7   6.2
1981 12      4.8   4.2
1982  1      2.4   8.1
1982  2      2.8   7.6
1982  3      0.9  10.6
1982  4      2.7  11.0
1982  5      0.4   8.2
1982  6      0.6  13.4
1982  7      1.8  20.0
1982  8      1.4  16.9
1982  9      0.0  21.6
1982 10      0.3  26.3
1982 11      0.0  28.6
1982 12      0.1  37.6
1983  1      0.0  31.5
1983  2      0.0  30.4
1983  3      0.0  35.3
1983  4      0.0  44.8
1983  5      0.0  46.1
1983  6      0.0  43.3
1983  7      0.0  35.6
1983  8      0.0  32.4
1983  9      0.2  31.6
1983 10      0.2  27.9
1983 11      0.0  35.3
1983 12      0.0  38.6
1984  1      0.0  27.2
1984  2      0.0  21.7
1984  3      0.0  22.1
1984  4      1.5  27.4
1984  5      3.2  27.7
1984  6      3.6  26.2
1984  7      3.7  30.3
1984  8      4.9  25.6
1984  9      5.3  21.0
1984 10      1.2  27.6
1984 11      0.8  28.5
1984 12      1.0  30.2
1985  1      1.9  25.6
1985  2      1.0  22.5
1985  3      0.8  24.9
1985  4      5.1  18.4
1985  5      5.7  14.5
1985  6      6.5  17.4
1985  7      7.9  17.3
1985  8      5.0  11.7
1985  9      0.0  19.9
1985 10      0.5  23.0
1985 11      0.0  31.8
1985 12      0.4  25.3
1986  1      0.4   9.8
1986  2      0.3  13.9
1986  3      1.1   7.8
1986  4      3.9   9.2
1986  5      4.7   7.5
1986  6      8.3   8.1
1986  7     10.5  10.0
1986  8      7.8  11.7
1986  9      5.6  21.6
1986 10      3.5  27.7
1986 11      1.5  27.6
1986 12      0.4  26.0
1987  1      0.5  18.9
1987  2      3.2  25.8
1987  3      3.3  25.6
1987  4      8.2  14.5
1987  5      7.6  20.0
1987  6     10.3  16.4
1987  7      6.4  15.5
1987  8      6.1  17.8
1987  9     13.0  13.4
1987 10     13.5   9.9
1987 11     12.6   8.5
1987 12      7.9  12.0
1988  1      7.2   8.5
1988  2     12.8   6.0
1988  3     15.5   4.7
1988  4     12.7   7.4
1988  5     15.4   7.1
1988  6     32.8   7.0
1988  7     35.6   7.3
1988  8     34.5   7.7
1988  9     28.8   8.7
1988 10     30.2   1.9
1988 11     19.9   2.5
1988 12     21.5   1.2
1989  1     16.9   1.4
1989  2     18.6   1.9
1989  3     11.1   1.9
1989  4     14.8   0.6
1989  5     16.0   0.5
1989  6     22.9   7.5
1989  7     23.7  11.6
1989  8     20.1  12.1
1989  9     17.5  14.5
1989 10     17.0  13.2
1989 11     21.1  10.3
1989 12     24.9   7.2
1990  1     23.6   7.1
1990  2     21.4   8.6
1990  3     20.8   6.4
1990  4     22.1   5.3
1990  5     16.0  11.5
1990  6     19.5   4.0
1990  7     17.5   6.3
1990  8     15.1   6.6
1990  9     17.7   3.8
1990 10     16.5   8.3
1990 11     17.6   7.1
1990 12     18.8  11.6
1991  1     17.9   9.6
1991  2     17.7   6.3
1991  3     12.5   6.9
1991  4      9.9   7.4
1991  5      3.2   9.7
1991  6      4.2   8.1
1991  7      6.5   8.8
1991  8      9.9   9.1
1991  9      9.2  10.6
1991 10      8.6   8.3
1991 11      5.5   9.4
1991 12      4.6  13.6
1992  1      6.6  16.6
1992  2      6.5  15.1
1992  3     10.6  15.4
1992  4     11.2  13.1
1992  5     16.8  15.6
1992  6     17.8  17.5
1992  7     10.4  20.0
1992  8     11.3  24.1
1992  9     11.8  21.4
1992 10     11.3  11.8
1992 11      8.8  23.5
1992 12      6.4  25.5
1993  1      4.1  33.4
1993  2      3.4  32.8
1993  3      3.7  36.0
1993  4      0.0  37.1
1993  5      0.0  29.8
1993  6      0.0  37.0
1993  7      0.0  42.0
1993  8      0.7  40.7
1993  9      1.0  36.7
1993 10      0.6  34.1
1993 11      0.2  34.8
1993 12      0.8  26.3
1994  1      0.8  26.3
1994  2      0.7  26.0
1994  3      3.0  15.6
1994  4      4.8  18.0
1994  5      5.0   8.2
1994  6      9.2   8.1
1994  7     13.2  11.3
1994  8     15.3  13.7
1994  9     17.1  10.8
1994 10      8.7  12.2
1994 11      2.8  14.4
1994 12      3.1  13.4
1995  1      1.2  17.0
1995  2      1.4   9.6
1995  3      2.1  13.1
1995  4      0.8  18.9
1995  5      0.7  32.3
1995  6      0.4  34.8
1995  7      1.1  38.7
1995  8      3.7  37.5
1995  9      2.0  32.2
1995 10      1.6  22.6
1995 11      2.4  22.4
1995 12      2.4  18.5
1996  1      2.9  23.3
1996  2      3.8  24.0
1996  3      7.9  20.5
1996  4      8.8  17.5
1996  5     19.1  28.0
1996  6     15.5  22.2
1996  7     14.8  23.8
1996  8      8.8  13.4
1996  9      5.2  20.3
1996 10      4.9  21.7
1996 11      1.2  28.6
1996 12      2.7  35.4
1997  1      2.0  34.9
1997  2      2.3  30.7
1997  3      3.0  20.6
1997  4      3.0  26.8
1997  5      5.0  22.6
1997  6      5.4  26.8
1997  7      5.9  27.4
1997  8      5.9  30.1
1997  9      3.3  24.3
1997 10      3.4  25.6
1997 11      1.3  17.1
1997 12      1.0  21.1
1998  1      0.8  23.1
1998  2      0.2  29.2
1998  3      0.0  34.0
1998  4      0.0  26.2
1998  5      0.7  21.8
1998  6      1.7  28.7
1998  7      6.8  30.5
1998  8      6.6  25.5
1998  9      8.5  18.7
1998 10      3.4  25.5
1998 11      6.0  27.7
1998 12      7.5  19.7
1999  1      1.1  22.6
1999  2      3.6  19.5
1999  3      2.7  10.3
1999  4      3.7  16.5
1999  5      5.4  20.3
1999  6      4.4  20.5
1999  7      5.7  20.8
1999  8      7.1  22.4
1999  9      3.7  19.5
1999 10      3.8  10.5
1999 11     11.8   6.4
1999 12     14.4   4.8
2000  1     16.3   4.5
2000  2     20.6   3.2
2000  3     16.8   5.5
2000  4     17.8   3.1
2000  5     22.5   4.4
2000  6     19.0   5.0
2000  7     29.6   5.7
2000  8     36.7   5.6
2000  9     36.2   4.6
2000 10     16.1   4.3
2000 11      9.4   6.9
2000 12     11.3   6.0
2001  1     15.6   8.7
2001  2     16.8  11.1
2001  3     15.7  10.8
2001  4     14.2   8.6
2001  5     19.1   9.0
2001  6     16.7   9.0
2001  7     18.4   8.3
2001  8     18.9   4.7
2001  9     18.6   4.4
2001 10     21.0   8.1
2001 11     19.9   5.9
2001 12     24.4   5.3
2002  1     22.8   2.0
2002  2     26.0   0.3
2002  3     22.1   3.0
2002  4     27.3   1.8
2002  5     30.2   4.7
2002  6     34.1   1.4
2002  7     36.5   4.0
2002  8     33.2   5.5
