# year    value 
 1900 -0.7149704 
 1901 -0.6828107 
 1902 -0.8044457 
 1903  -1.1657 
 1904 -1.029329 
 1905 -0.8817062 
 1906 -0.8041014 
 1907 -0.8025998 
 1908 -0.8034624 
 1909 -0.8153704 
 1910 -0.7548332 
 1911 -0.7522827 
 1912 -0.9089771 
 1913 -1.01498 
 1914 -0.8415358 
 1915 -0.759609 
 1916 -0.7134945 
 1917 -0.6725173 
 1918 -0.6594958 
 1919 -0.6543108 
 1920 -0.6527257 
 1921 -0.6570469 
 1922 -0.574947 
 1923 -0.6153187 
 1924 -0.5789408 
 1925 -0.5726088 
 1926 -0.5752299 
 1927 -0.6152562 
 1928 -0.572087 
 1929 -0.6478309 
 1930 -0.6094451 
 1931 -0.6112516 
 1932 -0.5762273 
 1933 -0.6427612 
 1934 -0.5614866 
 1935 -0.6079168 
 1936 -0.5954779 
 1937 -0.531642 
 1938 -0.5712319 
 1939 -0.5387842 
 1940 -0.5441134 
 1941 -0.4963788 
 1942 -0.5697087 
 1943 -0.5446882 
 1944 -0.5057495 
 1945 -0.5582965 
 1946 -0.5798574 
 1947 -0.5391478 
 1948 -0.513959 
 1949 -0.5166538 
 1950 -0.4880232 
 1951 -0.5312542 
 1952 -0.5704088 
 1953 -0.4816419 
 1954 -0.5606878 
 1955 -0.4785522 
 1956 -0.5621702 
 1957 -0.5330084 
 1958 -0.6084045 
 1959 -0.5214786 
 1960 -0.5369295 
 1961 -0.5400725 
 1962 -0.5100572 
 1963 -0.6267567 
 1964 -0.7986664 
 1965 -0.7903487 
 1966 -0.7107419 
 1967 -0.7336398 
 1968 -0.7739769 
 1969 -0.8061517 
 1970 -0.6597284 
 1971 -0.57855 
 1972 -0.5686618 
 1973 -0.5574541 
 1974 -0.5136487 
 1975 -0.5974504 
 1976 -0.5307704 
 1977 -0.4564423 
 1978 -0.3847453 
 1979 -0.3510108 
 1980 -0.3508272 
 1981 -0.2603174 
 1982 -0.3724269 
 1983 -0.6552112 
 1984 -0.4362433 
 1985 -0.3768013 
 1986 -0.3057711 
 1987 -0.2875642 
 1988 -0.1292906 
 1989 -0.1019442 
 1990 -0.07756705 
 1991 -0.102344 
 1992 -0.5610439 
 1993 -0.4517345 
 1994 -0.184867 
 1995 -0.1161347 
 1996 -0.02099742 
 1997 0.03740883 
 1998 0.1217819 
 1999 0.06928709 
 2000 0.2637662 
 2001 0.3224052 
 2002 0.3023071 
 2003 0.3931492 
 2004 0.3945682 
 2005 1.499277