# year value 1900 -1.779049 1901 -1.685665 1902 -1.867936 1903 -1.821585 1904 -1.884673 1905 -1.621085 1906 -1.867588 1907 -1.827969 1908 -1.649841 1909 -1.897049 1910 -1.697752 1911 -1.598825 1912 -1.856802 1913 -2.048973 1914 -2.156769 1915 -1.51825 1916 -1.660404 1917 -1.537856 1918 -1.541008 1919 -1.870128 1920 -1.846888 1921 -1.550768 1922 -1.468477 1923 -1.550758 1924 -1.468984 1925 -1.515424 1926 -1.626227 1927 -1.696018 1928 -1.578318 1929 -1.594012 1930 -1.795121 1931 -1.860023 1932 -1.769384 1933 -1.806593 1934 -1.53645 1935 -1.769158 1936 -1.621316 1937 -1.750493 1938 -1.582801 1939 -1.810392 1940 -1.823883 1941 -1.433039 1942 -1.540988 1943 -1.594768 1944 -1.631463 1945 -1.822453 1946 -1.66151 1947 -1.904745 1948 -1.460846 1949 -1.390988 1950 -1.41769 1951 -1.681132 1952 -1.65624 1953 -1.486249 1954 -1.71071 1955 -1.34126 1956 -1.595337 1957 -1.815275 1958 -1.621951 1959 -1.685452 1960 -1.322362 1961 -1.593823 1962 -1.576816 1963 -1.959425 1964 -1.859242 1965 -2.115004 1966 -1.622435 1967 -1.741351 1968 -1.661415 1969 -1.589594 1970 -1.73092 1971 -1.63148 1972 -1.575722 1973 -1.723031 1974 -1.704778 1975 -1.554978 1976 -1.504947 1977 -1.715499 1978 -1.487748 1979 -1.507006 1980 -1.579774 1981 -1.567773 1982 -1.333268 1983 -1.647404 1984 -1.597215 1985 -1.622927 1986 -1.455899 1987 -1.325754 1988 -1.314538 1989 -1.240042 1990 -1.160298 1991 -1.284799 1992 -1.479437 1993 -1.644725 1994 -1.478673 1995 -1.152562 1996 -1.410053 1997 -1.151802 1998 -1.095134 1999 -0.9922479 2000 -0.6759877 2001 -0.8179944 2002 -1.019054 2003 -0.7619885 2004 -0.9590526 2005 -1.06583