1898 38.3 57.0 45.5 4.7 1899 57.5 65.2 64.0 35.0 1900 38.2 55.8 44.6 7.3 1901 14.0 56.1 5.0 0.0 1902 59.0 67.2 63.3 41.3 1903 58.7 67.7 63.1 40.4 1904 88.0 86.3 90.0 84.7 1905 70.3 69.5 72.3 66.2 1906 0.0 0.0 0.0 0.0 1907 14.9 18.2 15.0 11.6 1908 13.3 28.7 12.5 2.1 1909 22.8 35.3 26.2 4.0 1910 72.2 77.1 75.3 60.2 1911 69.5 68.7 73.3 60.6 1912 60.3 67.1 61.9 50.5 1913 2.3 11.7 0.0 0.0 1914 20.2 30.5 24.1 2.0 1915 68.2 72.8 71.5 56.0 1916 33.7 50.8 36.3 12.7 1917 67.9 70.1 72.0 56.2 1918 92.4 86.0 94.5 92.7 1919 15.5 29.8 16.8 0.0 1920 83.6 80.0 85.8 81.5 1921 12.9 35.4 10.3 0.0 1922 34.2 54.9 32.5 20.7 1923 40.0 54.7 41.4 24.2 1924 23.8 49.6 21.1 8.3 1925 66.2 72.9 67.4 57.6 1926 47.7 63.1 50.3 28.0 1927 65.1 64.8 67.7 58.9 1928 19.0 48.3 14.7 4.4 1929 23.6 47.0 23.3 4.5 1930 26.4 57.5 19.4 17.0 1931 32.3 50.5 30.7 20.4 1932 0.0 0.0 0.0 0.0 1933 1.9 9.6 0.0 0.0 1934 9.9 41.0 1.2 4.5 1935 43.7 56.2 46.2 26.7 1936 69.0 67.0 73.3 60.1 1937 1.7 8.7 0.0 0.0 1938 53.6 61.2 56.8 39.5 1939 14.8 30.0 12.7 7.2 1940 54.2 65.9 54.6 43.4 1941 10.5 33.2 6.5 1.0 1942 37.0 50.4 38.3 22.3 1943 63.5 69.0 64.1 57.4 1944 52.4 64.7 55.3 34.9 1945 74.8 80.0 77.2 64.5 1946 54.9 66.5 59.3 34.4 1947 17.4 52.6 12.3 0.0 1948 44.7 63.9 44.0 29.9 1949 2.0 10.3 0.0 0.0 1950 0.0 0.0 0.0 0.0 1951 58.2 70.0 63.2 35.5 1952 47.8 61.9 52.3 24.8 1953 2.6 13.4 0.0 0.0 1954 34.8 53.5 34.0 20.5 1955 12.2 21.6 10.6 7.8 1956 57.5 64.8 58.1 49.8 1957 39.0 56.8 37.3 27.9 1958 22.4 46.7 19.8 7.9 1959 83.7 82.8 85.6 79.9 1960 6.8 22.2 3.5 1.9 1961 75.3 75.6 77.5 69.6 1962 56.8 68.8 60.4 37.7 1963 75.0 79.0 76.7 67.6 1964 70.3 73.9 75.2 55.3 1965 28.0 49.8 25.3 16.0 1966 23.9 38.5 23.6 12.0 1967 17.4 54.0 11.8 0.0 1968 60.5 69.0 62.8 47.6 1969 63.0 71.2 65.5 49.7 1970 77.3 77.1 78.2 75.5 1971 52.1 65.0 50.8 44.2 1972 10.2 29.5 6.8 2.1 1973 20.9 56.0 13.9 8.0 1974 28.2 59.1 19.0 24.5 1975 11.7 32.6 4.6 11.1 1976 57.2 80.2 54.9 43.1 1977 95.2 96.1 95.2 94.5 1978 81.6 93.3 83.0 68.4 1979 72.1 79.5 70.4 69.8 1980 17.4 41.4 10.7 13.5 1981 88.3 89.3 87.4 89.6 1982 61.1 74.7 57.8 57.9 1983 12.7 38.8 5.6 7.9 1984 88.7 92.0 89.7 83.5 1985 42.5 78.0 37.8 23.6 1986 87.9 84.6 90.9 83.5 1987 15.5 35.6 11.9 7.3 1988 44.6 64.2 42.4 33.2 1989 11.6 29.7 5.3 11.6 1990 45.1 57.0 33.8 62.5 1991 18.2 53.0 10.1 8.2 1992 11.9 31.5 7.8 5.2 1993 12.8 41.8 6.2 4.2 1994 71.3 94.2 66.1 64.5 1995 12.3 45.1 3.7 5.5 1996 76.8 90.9 75.5 67.9 1997 49.9 63.2 50.7 36.5 1998 2.1 8.3 0.1 1.9 1999 47.3 70.3 47.6 26.8 2000 28.8 60.7 20.5 22.0 2001 81.6 86.1 85.7 67.6 2002 6.8 27.6 1.3 2.4