# year    value 
 1900 -0.7485858 
 1901 -0.8174531 
 1902 -0.8392856 
 1903 -1.059536 
 1904 -0.9617632 
 1905 -0.9018821 
 1906 -0.8402139 
 1907 -0.7947693 
 1908 -0.7786877 
 1909 -0.7675253 
 1910 -0.7742653 
 1911 -0.6841213 
 1912 -0.6885727 
 1913 -0.8059629 
 1914 -0.7338249 
 1915 -0.6707438 
 1916 -0.6599764 
 1917 -0.6699855 
 1918 -0.6643684 
 1919 -0.6759818 
 1920 -0.6094602 
 1921 -0.589851 
 1922 -0.6058725 
 1923 -0.6313075 
 1924 -0.6258907 
 1925 -0.6116676 
 1926 -0.6497442 
 1927 -0.5457387 
 1928 -0.5524561 
 1929 -0.590785 
 1930 -0.6314336 
 1931 -0.6099511 
 1932 -0.5954859 
 1933 -0.6345324 
 1934 -0.6689522 
 1935 -0.524163 
 1936 -0.5168282 
 1937 -0.5273628 
 1938 -0.480302 
 1939 -0.4951235 
 1940 -0.5297458 
 1941 -0.4856724 
 1942 -0.4652967 
 1943 -0.4631118 
 1944 -0.4761472 
 1945 -0.470863 
 1946 -0.5244583 
 1947 -0.5112163 
 1948 -0.4717155 
 1949 -0.3976343 
 1950 -0.490941 
 1951 -0.4587314 
 1952 -0.5485643 
 1953 -0.4863667 
 1954 -0.4616902 
 1955 -0.4992463 
 1956 -0.4191902 
 1957 -0.4650985 
 1958 -0.4526369 
 1959 -0.3994944 
 1960 -0.4175133 
 1961 -0.4294885 
 1962 -0.4854323 
 1963 -0.6133061 
 1964 -0.8211403 
 1965 -0.6931482 
 1966 -0.655457 
 1967 -0.6058999 
 1968 -0.5841906 
 1969 -0.6030869 
 1970 -0.5184062 
 1971 -0.4220599 
 1972 -0.4241797 
 1973 -0.3930725 
 1974 -0.4505182 
 1975 -0.4437496 
 1976 -0.3719921 
 1977 -0.3838487 
 1978 -0.3146023 
 1979 -0.2826958 
 1980 -0.1683774 
 1981 -0.1844039 
 1982 -0.3137357 
 1983 -0.4500432 
 1984 -0.2740428 
 1985 -0.3431604 
 1986 -0.2827081 
 1987 -0.1427394 
 1988 -0.09514981 
 1989 -0.08258097 
 1990 -0.01613048 
 1991 -0.1799139 
 1992 -0.4152131 
 1993 -0.2576775 
 1994 -0.2665598 
 1995 -0.162781 
 1996 0.02857564 
 1997 0.05836596 
 1998 0.0974033 
 1999 0.1566757 
 2000 0.1457426 
 2001 0.2698653 
 2002 0.2963512 
 2003 0.2106153 
 2004 0.2733837 
 2005 0.1314148