# year value 1900 -1.294772 1901 -1.232485 1902 -1.409403 1903 -1.694257 1904 -1.93402 1905 -1.4349 1906 -1.451234 1907 -1.301151 1908 -1.195607 1909 -1.282907 1910 -1.43585 1911 -1.689767 1912 -1.470148 1913 -1.54149 1914 -1.565171 1915 -1.365683 1916 -1.652398 1917 -1.347676 1918 -1.100562 1919 -1.132951 1920 -1.329111 1921 -1.183454 1922 -1.364861 1923 -1.234769 1924 -1.588894 1925 -1.42967 1926 -1.260697 1927 -1.096532 1928 -1.227479 1929 -1.288387 1930 -1.38348 1931 -1.421443 1932 -1.104194 1933 -1.315887 1934 -1.372927 1935 -1.296147 1936 -1.185731 1937 -1.305534 1938 -1.230253 1939 -1.099091 1940 -1.295906 1941 -1.033256 1942 -1.069657 1943 -1.459502 1944 -1.070598 1945 -1.16302 1946 -1.163423 1947 -1.245935 1948 -1.14281 1949 -1.137579 1950 -1.090594 1951 -1.074986 1952 -0.9679556 1953 -1.109179 1954 -1.33338 1955 -1.341942 1956 -1.202259 1957 -1.3867 1958 -1.194663 1959 -1.249659 1960 -1.218548 1961 -1.106673 1962 -1.254886 1963 -1.202306 1964 -1.414892 1965 -1.475541 1966 -1.313111 1967 -1.139609 1968 -1.331734 1969 -1.385532 1970 -1.405641 1971 -1.170453 1972 -1.275948 1973 -1.238341 1974 -1.346651 1975 -1.370421 1976 -1.232182 1977 -1.192579 1978 -1.148844 1979 -1.005761 1980 -0.9732794 1981 -1.016525 1982 -1.111016 1983 -1.495315 1984 -1.161072 1985 -1.223271 1986 -1.119646 1987 -1.170776 1988 -1.252018 1989 -0.8730351 1990 -0.9770047 1991 -0.8675253 1992 -1.254956 1993 -1.15259 1994 -0.6525334 1995 -0.8111455 1996 -0.9159904 1997 -0.8866525 1998 -0.677411 1999 -0.8021469 2000 -0.4658294 2001 -0.5628713 2002 -0.7876068 2003 -0.4857853 2004 -0.4296268 2005 -0.4693811