# year    value 
 1900 -5.365846 
 1901 -5.297362 
 1902 -5.339748 
 1903 -5.497913 
 1904 -5.443099 
 1905 -5.384546 
 1906 -5.347946 
 1907 -5.328915 
 1908 -5.357453 
 1909 -5.323493 
 1910 -5.252206 
 1911 -5.266595 
 1912 -5.223489 
 1913 -5.338425 
 1914 -5.302796 
 1915 -5.25877 
 1916 -5.277833 
 1917 -5.278705 
 1918 -5.175743 
 1919 -5.218368 
 1920 -5.214063 
 1921 -5.221563 
 1922 -5.234293 
 1923 -5.236794 
 1924 -5.286601 
 1925 -5.203478 
 1926 -5.22224 
 1927 -5.113098 
 1928 -5.093498 
 1929 -5.227789 
 1930 -5.174303 
 1931 -5.196583 
 1932 -5.173197 
 1933 -5.275274 
 1934 -5.167321 
 1935 -5.168611 
 1936 -5.128289 
 1937 -5.151443 
 1938 -5.162923 
 1939 -5.130408 
 1940 -5.129583 
 1941 -5.061221 
 1942 -5.142901 
 1943 -5.223947 
 1944 -5.202039 
 1945 -5.059884 
 1946 -5.133791 
 1947 -5.16273 
 1948 -5.092172 
 1949 -5.119987 
 1950 -5.102156 
 1951 -5.091031 
 1952 -5.131995 
 1953 -5.130291 
 1954 -5.137122 
 1955 -5.112155 
 1956 -5.069517 
 1957 -5.123809 
 1958 -5.102071 
 1959 -5.041853 
 1960 -5.032861 
 1961 -5.087451 
 1962 -5.151877 
 1963 -5.195082 
 1964 -5.247814 
 1965 -5.215719 
 1966 -5.194957 
 1967 -5.092141 
 1968 -5.112427 
 1969 -5.11363 
 1970  -5.1696 
 1971 -5.069952 
 1972 -5.021531 
 1973 -5.064337 
 1974 -5.039641 
 1975 -5.127247 
 1976 -5.079829 
 1977 -4.959488 
 1978 -4.995867 
 1979 -4.941255 
 1980 -4.903419 
 1981 -4.915533 
 1982 -4.971019 
 1983 -5.006798 
 1984 -4.964804 
 1985 -4.932212 
 1986 -4.979362 
 1987 -4.931467 
 1988 -4.882864 
 1989 -4.792707 
 1990 -4.815111 
 1991 -4.802748 
 1992 -5.053505 
 1993 -4.968372 
 1994 -4.882225 
 1995 -4.822967 
 1996 -4.725258 
 1997 -4.748569 
 1998 -4.654025 
 1999 -4.637373 
 2000 -4.703508 
 2001 -4.618599 
 2002 -4.589483 
 2003 -4.57337 
 2004 -4.639751 
 2005 -4.573906