# year    value 
 1900 -0.8697309 
 1901 -0.9504811 
 1902 -0.9623596 
 1903 -1.224513 
 1904 -1.207867 
 1905 -1.050294 
 1906 -1.043102 
 1907 -1.024151 
 1908 -0.9585193 
 1909 -0.9845076 
 1910 -0.9715244 
 1911 -0.9480816 
 1912 -0.9119709 
 1913 -1.067723 
 1914 -1.011335 
 1915 -0.9557303 
 1916 -0.8512169 
 1917 -0.8435482 
 1918 -0.8787597 
 1919 -0.8783506 
 1920 -0.8133278 
 1921 -0.7936989 
 1922 -0.8131686 
 1923 -0.7964795 
 1924 -0.7906962 
 1925 -0.809486 
 1926 -0.7872295 
 1927 -0.7968319 
 1928 -0.7240852 
 1929 -0.820855 
 1930 -0.8389224 
 1931 -0.809104 
 1932 -0.7689031 
 1933 -0.8436163 
 1934 -0.8176731 
 1935 -0.8034725 
 1936 -0.7330847 
 1937 -0.7036353 
 1938 -0.7394782 
 1939 -0.7008094 
 1940 -0.7209255 
 1941 -0.7116201 
 1942 -0.7228972 
 1943 -0.779934 
 1944 -0.7015421 
 1945 -0.7002375 
 1946 -0.7504512 
 1947 -0.7211599 
 1948 -0.6514095 
 1949 -0.6549411 
 1950 -0.6433601 
 1951 -0.6650919 
 1952 -0.6902791 
 1953 -0.6796009 
 1954 -0.6723273 
 1955 -0.6753734 
 1956 -0.6872813 
 1957 -0.6357093 
 1958 -0.6857969 
 1959 -0.708087 
 1960 -0.6153209 
 1961 -0.665137 
 1962 -0.6848139 
 1963 -0.7582409 
 1964 -0.8920397 
 1965 -0.8510332 
 1966 -0.8549157 
 1967 -0.8132372 
 1968 -0.7918519 
 1969 -0.8380132 
 1970 -0.7958398 
 1971 -0.6948873 
 1972 -0.6354964 
 1973 -0.6430017 
 1974 -0.673133 
 1975 -0.6711605 
 1976 -0.6028994 
 1977 -0.6110629 
 1978 -0.5368835 
 1979 -0.5367292 
 1980 -0.443355 
 1981 -0.3973059 
 1982 -0.4733403 
 1983 -0.7177856 
 1984 -0.5281187 
 1985 -0.5365958 
 1986 -0.5250622 
 1987 -0.4234334 
 1988 -0.3314447 
 1989 -0.2767532 
 1990 -0.2129351 
 1991 -0.2201548 
 1992 -0.6151368 
 1993 -0.4884369 
 1994 -0.3828996 
 1995 -0.3650369 
 1996 -0.2522586 
 1997 -0.1559703 
 1998 -0.1016147 
 1999 -0.08117893 
 2000 -0.01553659 
 2001 0.07788412 
 2002 0.08263942 
 2003 0.06350753 
 2004 0.08878138 
 2005 0.1703429