# year    value 
 1900 -0.7287193 
 1901 -0.6799438 
 1902 -0.7909378 
 1903 -1.129103 
 1904 -1.041885 
 1905 -0.8728578 
 1906 -0.8265161 
 1907 -0.8509275 
 1908 -0.8009341 
 1909 -0.8336977 
 1910 -0.7796687 
 1911 -0.7882446 
 1912 -0.9205689 
 1913 -1.025898 
 1914 -0.8917947 
 1915 -0.786262 
 1916 -0.7479418 
 1917 -0.6750906 
 1918 -0.6492953 
 1919 -0.6671106 
 1920 -0.6917671 
 1921 -0.6540471 
 1922 -0.5713672 
 1923 -0.643508 
 1924 -0.6427507 
 1925 -0.6326583 
 1926 -0.5732444 
 1927 -0.6030952 
 1928 -0.5546191 
 1929 -0.6483913 
 1930 -0.6353615 
 1931 -0.6317421 
 1932 -0.5624649 
 1933 -0.68758 
 1934 -0.5908032 
 1935 -0.6361177 
 1936 -0.6004081 
 1937 -0.5211059 
 1938 -0.5853098 
 1939 -0.5610055 
 1940 -0.5710248 
 1941 -0.5151388 
 1942 -0.5845876 
 1943 -0.5922395 
 1944 -0.542361 
 1945 -0.5647698 
 1946 -0.6274331 
 1947 -0.5543554 
 1948 -0.5611311 
 1949 -0.5174459 
 1950 -0.5001729 
 1951 -0.5424946 
 1952 -0.5823383 
 1953 -0.5071629 
 1954 -0.5735514 
 1955 -0.5126969 
 1956 -0.5599204 
 1957 -0.5311027 
 1958 -0.5862906 
 1959 -0.5501139 
 1960 -0.5336047 
 1961 -0.5501759 
 1962 -0.5804655 
 1963 -0.6650983 
 1964 -0.8052252 
 1965 -0.7956649 
 1966 -0.7437432 
 1967 -0.7248398 
 1968 -0.7712603 
 1969 -0.8368754 
 1970 -0.7035127 
 1971 -0.6315515 
 1972 -0.56381 
 1973 -0.591778 
 1974 -0.5647239 
 1975 -0.6002385 
 1976 -0.5625675 
 1977 -0.5159414 
 1978 -0.4078145 
 1979 -0.3587087 
 1980 -0.3578514 
 1981 -0.2406983 
 1982 -0.3863734 
 1983 -0.65458 
 1984 -0.4524817 
 1985 -0.4025908 
 1986 -0.3443234 
 1987 -0.2792715 
 1988 -0.1903016 
 1989 -0.1063365 
 1990 -0.06378269 
 1991 -0.08572767 
 1992 -0.562551 
 1993 -0.4218297 
 1994 -0.166939 
 1995 -0.09222153 
 1996 -0.05883092 
 1997 0.05813337 
 1998 0.09962864 
 1999 0.1065874 
 2000 0.2620803 
 2001 0.2933648 
 2002 0.3200358 
 2003 0.4045175 
 2004 0.3888848 
 2005 1.414872