# year    value 
 1900 -0.78087 
 1901 -0.9680563 
 1902 -0.9536114 
 1903 -1.129323 
 1904 -1.117131 
 1905 -0.9636574 
 1906 -0.9202623 
 1907 -0.8216407 
 1908 -0.8411946 
 1909 -0.764354 
 1910 -0.8040919 
 1911 -0.8205707 
 1912 -0.7383866 
 1913 -0.8570237 
 1914 -0.7191266 
 1915 -0.768535 
 1916 -0.7173405 
 1917 -0.7057185 
 1918 -0.7393898 
 1919 -0.7826789 
 1920 -0.7099198 
 1921 -0.6575949 
 1922 -0.7119952 
 1923 -0.6906461 
 1924 -0.7164383 
 1925 -0.684961 
 1926 -0.6748623 
 1927 -0.6213059 
 1928 -0.6591016 
 1929 -0.7026494 
 1930 -0.6932039 
 1931 -0.71492 
 1932 -0.5940814 
 1933 -0.6637412 
 1934 -0.7625382 
 1935 -0.6139445 
 1936 -0.5528982 
 1937 -0.6324655 
 1938 -0.6351238 
 1939 -0.5460178 
 1940 -0.6773655 
 1941 -0.6440195 
 1942 -0.5571995 
 1943 -0.6054122 
 1944 -0.5828252 
 1945 -0.5105695 
 1946 -0.6220254 
 1947 -0.6453045 
 1948 -0.591331 
 1949 -0.4467387 
 1950 -0.5750382 
 1951 -0.5156788 
 1952 -0.5292085 
 1953 -0.6439184 
 1954 -0.5129321 
 1955 -0.5696619 
 1956 -0.550909 
 1957 -0.5663955 
 1958 -0.6346931 
 1959 -0.5884181 
 1960 -0.6042058 
 1961 -0.50414 
 1962 -0.6201926 
 1963 -0.5730492 
 1964 -0.8445269 
 1965 -0.7786705 
 1966 -0.7399257 
 1967 -0.7008103 
 1968 -0.6540926 
 1969 -0.7362158 
 1970 -0.6248206 
 1971 -0.5214744 
 1972 -0.4837671 
 1973 -0.4757531 
 1974 -0.5660219 
 1975 -0.4848985 
 1976 -0.4660312 
 1977 -0.4893252 
 1978 -0.4860546 
 1979 -0.4856648 
 1980 -0.2693161 
 1981 -0.3028121 
 1982 -0.4162134 
 1983 -0.6123722 
 1984 -0.4010514 
 1985 -0.5146142 
 1986 -0.3815559 
 1987 -0.2650947 
 1988 -0.2369259 
 1989 -0.2533013 
 1990 -0.1997027 
 1991 -0.2057465 
 1992 -0.544425 
 1993 -0.4270652 
 1994 -0.404366 
 1995 -0.4328252 
 1996 -0.1911487 
 1997 -0.1508642 
 1998 -0.142272 
 1999 -0.03732996 
 2000 -0.09026536 
 2001 0.05840407 
 2002 0.1607882 
 2003 -0.0304565 
 2004 -0.09546171 
 2005 0.0426297