# year    value 
 1900 -2.099638 
 1901 -2.280647 
 1902 -2.455638 
 1903 -2.484206 
 1904 -2.692428 
 1905 -2.356104 
 1906 -2.334145 
 1907 -2.032421 
 1908 -2.09999 
 1909 -2.257705 
 1910 -2.23797 
 1911 -2.571958 
 1912 -2.295476 
 1913 -2.487632 
 1914 -2.292341 
 1915 -2.224996 
 1916 -2.402352 
 1917 -2.195979 
 1918 -2.172985 
 1919 -1.973436 
 1920 -2.156363 
 1921 -2.052876 
 1922 -2.104899 
 1923 -2.136936 
 1924 -2.389286 
 1925 -2.271852 
 1926 -2.125679 
 1927 -1.923382 
 1928 -2.055662 
 1929 -2.177037 
 1930 -2.253082 
 1931 -2.284754 
 1932 -2.068623 
 1933 -2.220137 
 1934 -2.283197 
 1935 -2.111343 
 1936 -2.079402 
 1937 -2.032216 
 1938 -2.120063 
 1939 -2.09076 
 1940 -2.132495 
 1941 -1.847373 
 1942 -2.199055 
 1943 -2.148095 
 1944 -1.93175 
 1945 -2.019653 
 1946 -2.002742 
 1947 -2.106122 
 1948 -2.049018 
 1949 -2.065269 
 1950 -2.194078 
 1951 -2.090773 
 1952 -1.963582 
 1953 -2.085753 
 1954 -2.071189 
 1955 -2.32383 
 1956 -2.121459 
 1957 -2.202991 
 1958 -2.046455 
 1959 -2.122358 
 1960 -2.248193 
 1961 -2.022419 
 1962 -2.234927 
 1963 -2.061126 
 1964 -2.426602 
 1965 -2.160483 
 1966 -2.370781 
 1967 -2.153553 
 1968 -2.221408 
 1969 -2.257204 
 1970 -2.266853 
 1971 -2.080576 
 1972 -2.174073 
 1973 -2.031745 
 1974 -2.189777 
 1975 -2.215972 
 1976 -2.062606 
 1977 -2.072255 
 1978  -1.9466 
 1979 -1.849747 
 1980 -1.869812 
 1981 -2.020769 
 1982 -1.985992 
 1983 -2.229522 
 1984 -1.893989 
 1985 -2.068318 
 1986 -1.835628 
 1987 -2.146269 
 1988 -1.926703 
 1989 -1.677171 
 1990 -1.735007 
 1991 -1.713205 
 1992 -2.009817 
 1993 -1.997129 
 1994 -1.652142 
 1995 -1.917019 
 1996 -1.917424 
 1997 -1.729753 
 1998 -1.529833 
 1999 -1.660937 
 2000 -1.181877 
 2001 -1.254994 
 2002 -1.443082 
 2003 -1.199906 
 2004 -1.227839 
 2005 -1.38533