1895	46.638
1896	49.074
1897	47.658
1898	48.571
1899	46.214
1900	48.956
1901	47.656
1902	48.188
1903	47.019
1904	46.994
1905	46.911
1906	47.819
1907	47.709
1908	48.768
1909	48.059
1910	49.096
1911	49.633
1912	45.806
1913	47.338
1914	48.734
1915	47.683
1916	47.458
1917	45.504
1918	48.304
1919	48.451
1920	46.929
1921	50.708
1922	47.663
1923	47.498
1924	46.738
1925	50.209
1926	48.703
1927	49.204
1928	48.326
1929	46.601
1930	48.573
1931	49.491
1932	48.721
1933	48.789
1934	51.114
1935	48.509
1936	47.596
1937	46.978
1938	49.839
1939	49.178
1940	47.523
1941	48.868
1942	47.981
1943	48.564
1944	48.408
1945	48.548
1946	50.094
1947	47.568
1948	47.734
1949	47.964
1950	47.788
1951	47.656
1952	49.001
1953	49.948
1954	49.734
1955	47.811
1956	48.491
1957	48.521
1958	47.943
1959	48.569
1960	47.061
1961	48.854
1962	47.888
1963	48.231
1964	48.084
1965	47.438
1966	47.359
1967	48.563
1968	48.034
1969	47.398
1970	47.656
1971	47.716
1972	48.761
1973	48.378
1974	49.343
1975	47.329
1976	49.328
1977	48.988
1978	46.751
1979	45.771
1980	48.153
1981	50.218
1982	46.939
1983	48.321
1984	48.329
1985	48.388
1986	51.059
1987	50.593
1988	48.821
1989	48.653
1990	50.788
1991	50.223
1992	50.676
1993	47.696
1994	49.203
1995	49.139
1996	48.456
1997	48.593
1998	50.303
1999	50.178
2000	51.558