1895	70.968
1896	72.498
1897	71.471
1898	72.331
1899	71.671
1900	72.644
1901	73.268
1902	71.171
1903	70.171
1904	70.354
1905	71.351
1906	71.104
1907	70.328
1908	70.828
1909	72.154
1910	71.771
1911	72.054
1912	70.358
1913	72.284
1914	72.404
1915	69.734
1916	71.511
1917	71.514
1918	72.664
1919	72.601
1920	70.891
1921	72.948
1922	72.634
1923	71.624
1924	71.488
1925	72.454
1926	71.981
1927	70.408
1928	71.004
1929	71.938
1930	72.824
1931	73.528
1932	72.711
1933	73.608
1934	74.301
1935	72.651
1936	74.754
1937	73.421
1938	72.841
1939	72.821
1940	72.654
1941	72.104
1942	71.991
1943	72.998
1944	71.834
1945	71.071
1946	71.858
1947	71.981
1948	72.124
1949	72.598
1950	70.468
1951	71.408
1952	73.271
1953	72.831
1954	72.884
1955	72.314
1956	72.414
1957	72.318
1958	72.001
1959	72.958
1960	72.414
1961	72.514
1962	71.421
1963	72.184
1964	71.844
1965	70.921
1966	72.018
1967	71.188
1968	71.434
1969	72.118
1970	72.794
1971	72.101
1972	71.508
1973	72.381
1974	71.728
1975	71.644
1976	71.271
1977	72.968
1978	72.314
1979	71.461
1980	73.208
1981	72.721
1982	71.314
1983	72.901
1984	72.461
1985	71.838
1986	72.704
1987	72.574
1988	73.891
1989	71.994
1990	72.684
1991	72.811
1992	70.281
1993	71.328
1994	73.001
1995	72.641
1996	72.654
1997	71.888
1998	73.274
1999	72.678
2000	73.178