# year    value 
 1900 0.4189019 
 1901 0.4441489 
 1902 0.3015245 
 1903 0.04621871 
 1904 0.04054597 
 1905 0.2721944 
 1906 0.3377012 
 1907 0.3121981 
 1908 0.2646777 
 1909 0.287665 
 1910 0.3893154 
 1911 0.4219594 
 1912 0.5081742 
 1913 0.1157587 
 1914 0.3817378 
 1915 0.2711712 
 1916 0.5403488 
 1917 0.4516253 
 1918 0.366556 
 1919 0.502758 
 1920 0.5037822 
 1921 0.4267569 
 1922 0.5943157 
 1923 0.5549015 
 1924 0.8033801 
 1925 0.6140683 
 1926 0.6179684 
 1927 0.5031332 
 1928 0.4852106 
 1929 0.5142797 
 1930 0.4077974 
 1931 0.5717661 
 1932 0.6152976 
 1933 0.5452923 
 1934 0.5843174 
 1935 0.5952848 
 1936 0.5512888 
 1937 0.5021811 
 1938 0.5556431 
 1939 0.551072 
 1940 0.5659322 
 1941 0.5460639 
 1942 0.5332423 
 1943 0.5441949 
 1944 0.6658576 
 1945 0.5938795 
 1946 0.5955923 
 1947 0.6860585 
 1948 0.6563656 
 1949 0.6464379 
 1950 0.6540229 
 1951 0.6107521 
 1952 0.5469657 
 1953 0.7477145 
 1954 0.5617431 
 1955 0.7278987 
 1956 0.4948883 
 1957 0.6947945 
 1958 0.6434222 
 1959 0.5138611 
 1960 0.6120153 
 1961 0.5392224 
 1962 0.8051131 
 1963 0.6177744 
 1964 0.4919266 
 1965 0.3691156 
 1966 0.3916826 
 1967 0.465446 
 1968 0.3311211 
 1969 0.3482606 
 1970 0.4965958 
 1971 0.516732 
 1972 0.6006576 
 1973 0.7677841 
 1974 0.5585437 
 1975 0.5713793 
 1976 0.6943443 
 1977 0.7508412 
 1978 0.7980003 
 1979 0.7633628 
 1980 0.8260499 
 1981 0.8334505 
 1982 0.9276342 
 1983 0.4892451 
 1984 0.7756802 
 1985 0.8509044 
 1986 0.8006049 
 1987 0.7178426 
 1988 0.9773104 
 1989 1.021461 
 1990 0.9463037 
 1991 1.119283 
 1992 0.4492939 
 1993 0.5167055 
 1994 0.866177 
 1995 0.9063139 
 1996 1.142192 
 1997 1.060146 
 1998 1.143189 
 1999 1.086978 
 2000 1.303405 
 2001 1.185073 
 2002 1.363654 
 2003 1.324163 
 2004 1.532506 
 2005 1.273008