# year    value 
 1900 -5.279256 
 1901 -5.206757 
 1902  -5.2462 
 1903 -5.393412 
 1904 -5.343184 
 1905 -5.291914 
 1906 -5.25071 
 1907 -5.224815 
 1908 -5.267132 
 1909 -5.232141 
 1910 -5.157634 
 1911 -5.173424 
 1912 -5.139302 
 1913 -5.247506 
 1914 -5.200788 
 1915 -5.16242 
 1916 -5.191869 
 1917 -5.184687 
 1918 -5.085534 
 1919 -5.131394 
 1920 -5.120254 
 1921 -5.137352 
 1922 -5.140367 
 1923 -5.139953 
 1924 -5.190791 
 1925 -5.106419 
 1926 -5.123168 
 1927 -5.020478 
 1928 -5.004471 
 1929 -5.13615 
 1930 -5.084877 
 1931 -5.105381 
 1932 -5.077442 
 1933 -5.191142 
 1934 -5.081048 
 1935 -5.08296 
 1936 -5.037808 
 1937 -5.061063 
 1938 -5.063557 
 1939 -5.042697 
 1940 -5.044152 
 1941 -4.967612 
 1942 -5.064757 
 1943 -5.135731 
 1944 -5.111125 
 1945 -4.973416 
 1946 -5.044085 
 1947 -5.07891 
 1948 -5.000542 
 1949 -5.022084 
 1950 -5.010683 
 1951 -4.99881 
 1952 -5.043467 
 1953 -5.032981 
 1954 -5.041289 
 1955 -5.024836 
 1956 -4.978166 
 1957 -5.033108 
 1958 -5.015648 
 1959 -4.954167 
 1960 -4.94908 
 1961 -4.996602 
 1962 -5.056793 
 1963 -5.099073 
 1964 -5.152135 
 1965 -5.125436 
 1966 -5.097866 
 1967 -4.998493 
 1968 -5.023015 
 1969 -5.021514 
 1970 -5.077837 
 1971 -4.98248 
 1972 -4.942553 
 1973 -4.979568 
 1974 -4.945548 
 1975 -5.037741 
 1976 -4.990457 
 1977 -4.875141 
 1978 -4.909513 
 1979 -4.857348 
 1980 -4.82009 
 1981 -4.832653 
 1982 -4.883495 
 1983 -4.922504 
 1984 -4.880731 
 1985 -4.851012 
 1986 -4.882108 
 1987 -4.83992 
 1988 -4.800061 
 1989 -4.70952 
 1990 -4.730647 
 1991 -4.715802 
 1992 -4.961768 
 1993 -4.882564 
 1994 -4.792193 
 1995 -4.735452 
 1996 -4.64108 
 1997 -4.669336 
 1998 -4.566823 
 1999 -4.557902 
 2000 -4.608737 
 2001 -4.529939 
 2002 -4.500869 
 2003 -4.490522 
 2004 -4.559791 
 2005 -4.488986