# year value 1900 -1.482077 1901 -1.498802 1902 -1.600457 1903 -1.828934 1904 -1.911764 1905 -1.591986 1906 -1.62089 1907 -1.710742 1908 -1.475219 1909 -1.68987 1910 -1.615755 1911 -1.608604 1912 -1.570745 1913 -1.82945 1914 -1.733906 1915 -1.557841 1916 -1.511334 1917 -1.434167 1918 -1.457677 1919 -1.467758 1920 -1.40388 1921 -1.428518 1922 -1.387509 1923 -1.434334 1924 -1.367906 1925 -1.521584 1926 -1.401388 1927 -1.481947 1928 -1.345696 1929 -1.465835 1930 -1.51784 1931 -1.505148 1932 -1.342484 1933 -1.500832 1934 -1.38299 1935 -1.485887 1936 -1.414545 1937 -1.304399 1938 -1.477583 1939 -1.350845 1940 -1.426144 1941 -1.287525 1942 -1.375585 1943 -1.557912 1944 -1.370312 1945 -1.369176 1946 -1.402772 1947 -1.38882 1948 -1.254395 1949 -1.342158 1950 -1.246983 1951 -1.296602 1952 -1.35078 1953 -1.272662 1954 -1.373057 1955 -1.2318 1956 -1.395643 1957 -1.284982 1958 -1.323281 1959 -1.375803 1960 -1.249265 1961 -1.385806 1962 -1.34718 1963 -1.434162 1964 -1.488557 1965 -1.536663 1966 -1.522707 1967 -1.507042 1968 -1.526901 1969 -1.598893 1970 -1.559242 1971 -1.448137 1972 -1.324341 1973 -1.371619 1974 -1.422669 1975 -1.375787 1976 -1.3156 1977 -1.298833 1978 -1.160335 1979 -1.242243 1980 -1.180137 1981 -1.097926 1982 -1.064562 1983 -1.4701 1984 -1.196073 1985 -1.270338 1986 -1.180812 1987 -1.115363 1988 -1.053985 1989 -0.8574541 1990 -0.8527452 1991 -0.8634034 1992 -1.313874 1993 -1.245613 1994 -1.023839 1995 -0.9735304 1996 -0.9065278 1997 -0.797587 1998 -0.7519505 1999 -0.771892 2000 -0.5866621 2001 -0.5302649 2002 -0.6524717 2003 -0.5527031 2004 -0.4805171 2005 -0.4802651