# year    value 
 1900 -5.86534 
 1901 -5.820017 
 1902 -5.879383 
 1903 -6.100727 
 1904 -6.019455 
 1905 -5.918892 
 1906 -5.908853 
 1907 -5.929413 
 1908 -5.878467 
 1909 -5.850455 
 1910 -5.797746 
 1911 -5.804053 
 1912 -5.709123 
 1913 -5.862892 
 1914 -5.891232 
 1915 -5.814567 
 1916 -5.773722 
 1917 -5.821048 
 1918 -5.696115 
 1919 -5.720079 
 1920 -5.755199 
 1921 -5.707329 
 1922 -5.776106 
 1923 -5.795425 
 1924 -5.839283 
 1925 -5.763367 
 1926 -5.79374 
 1927 -5.647374 
 1928 -5.607055 
 1929 -5.756411 
 1930 -5.690152 
 1931 -5.722687 
 1932 -5.72556 
 1933 -5.760591 
 1934 -5.664984 
 1935 -5.662688 
 1936 -5.650225 
 1937 -5.672798 
 1938 -5.736122 
 1939 -5.636364 
 1940 -5.622393 
 1941 -5.601205 
 1942 -5.593676 
 1943 -5.732818 
 1944 -5.726481 
 1945 -5.558673 
 1946 -5.651261 
 1947 -5.64625 
 1948 -5.620742 
 1949 -5.684745 
 1950 -5.62982 
 1951 -5.623008 
 1952 -5.642671 
 1953 -5.691623 
 1954 -5.689931 
 1955 -5.615859 
 1956 -5.596476 
 1957 -5.647023 
 1958 -5.600605 
 1959 -5.54767 
 1960 -5.516154 
 1961 -5.611513 
 1962 -5.700369 
 1963 -5.748909 
 1964 -5.799739 
 1965 -5.736515 
 1966 -5.755027 
 1967 -5.632348 
 1968 -5.628204 
 1969 -5.645002 
 1970 -5.698937 
 1971 -5.574541 
 1972 -5.477114 
 1973 -5.55333 
 1974 -5.58242 
 1975 -5.643569 
 1976 -5.595371 
 1977 -5.446045 
 1978 -5.493999 
 1979 -5.42527 
 1980 -5.384105 
 1981 -5.393629 
 1982 -5.475904 
 1983 -5.493044 
 1984 -5.449778 
 1985 -5.400618 
 1986 -5.540367 
 1987 -5.459555 
 1988 -5.360512 
 1989 -5.272577 
 1990 -5.302341 
 1991 -5.304295 
 1992 -5.58269 
 1993 -5.463354 
 1994 -5.401573 
 1995 -5.327796 
 1996 -5.210839 
 1997 -5.205625 
 1998 -5.157055 
 1999 -5.095799 
 2000 -5.250191 
 2001 -5.130035 
 2002 -5.100656 
 2003 -5.051278 
 2004 -5.101008 
 2005 -5.063775