# year    value 
 1900 -0.8427054 
 1901 -0.9218051 
 1902 -0.9688509 
 1903 -1.199577 
 1904 -1.189076 
 1905 -0.9975285 
 1906 -1.037384 
 1907 -0.9941422 
 1908 -0.959107 
 1909 -0.9811627 
 1910 -0.938432 
 1911 -0.9400607 
 1912 -0.8898073 
 1913 -1.100273 
 1914 -0.9546973 
 1915 -0.96179 
 1916 -0.8055496 
 1917 -0.8288206 
 1918 -0.8716303 
 1919 -0.8283976 
 1920 -0.7417717 
 1921 -0.7902837 
 1922 -0.7564115 
 1923 -0.7609442 
 1924 -0.7034562 
 1925 -0.7678618 
 1926 -0.7644599 
 1927 -0.7966968 
 1928 -0.7237426 
 1929 -0.8065032 
 1930 -0.8246125 
 1931 -0.8127727 
 1932 -0.7419884 
 1933 -0.8320599 
 1934 -0.7385093 
 1935 -0.7776312 
 1936 -0.7193858 
 1937 -0.7352367 
 1938 -0.7024882 
 1939 -0.6885148 
 1940 -0.7061982 
 1941 -0.6973146 
 1942 -0.7430277 
 1943 -0.7347026 
 1944 -0.675771 
 1945 -0.6854421 
 1946 -0.7086731 
 1947 -0.6681733 
 1948 -0.6233155 
 1949 -0.6696439 
 1950 -0.6364257 
 1951 -0.6612323 
 1952 -0.6821638 
 1953 -0.6259414 
 1954 -0.6457349 
 1955 -0.6349316 
 1956 -0.7087882 
 1957 -0.590199 
 1958 -0.6783713 
 1959 -0.6859919 
 1960 -0.5937039 
 1961 -0.6537686 
 1962 -0.6299468 
 1963 -0.7052876 
 1964 -0.8559147 
 1965 -0.8645902 
 1966 -0.8317212 
 1967 -0.7959194 
 1968 -0.7864161 
 1969 -0.8095593 
 1970 -0.7675726 
 1971 -0.6729843 
 1972 -0.6237135 
 1973 -0.5881883 
 1974 -0.6710533 
 1975 -0.6577619 
 1976 -0.5716744 
 1977 -0.5927011 
 1978 -0.5092546 
 1979 -0.5228196 
 1980 -0.4313749 
 1981 -0.4264807 
 1982 -0.4268672 
 1983 -0.7115973 
 1984 -0.4889672 
 1985 -0.5190132 
 1986 -0.4668361 
 1987 -0.409196 
 1988 -0.3155054 
 1989 -0.2112388 
 1990 -0.20372 
 1991 -0.1989597 
 1992 -0.6147821 
 1993 -0.5522507 
 1994 -0.3874511 
 1995 -0.3500206 
 1996 -0.2039381 
 1997 -0.1437697 
 1998 -0.05798641 
 1999 -0.1059626 
 2000 0.08166078 
 2001 0.1303138 
 2002 0.1148808 
 2003 0.112344 
 2004 0.1585548 
 2005 0.1799788