# year    value 
 1900 -1.048923 
 1901 -1.161393 
 1902 -1.192351 
 1903 -1.507922 
 1904 -1.499402 
 1905 -1.458505 
 1906 -1.437223 
 1907 -1.451255 
 1908 -1.307921 
 1909 -1.33265 
 1910 -1.267688 
 1911 -1.256893 
 1912 -1.494862 
 1913 -1.513898 
 1914 -1.404719 
 1915 -1.267986 
 1916 -1.214655 
 1917 -1.202788 
 1918 -1.06895 
 1919 -1.167741 
 1920 -0.9751451 
 1921 -1.051899 
 1922 -1.147458 
 1923 -0.9063641 
 1924 -0.9669811 
 1925 -0.9127101 
 1926 -1.025532 
 1927 -0.9285615 
 1928 -0.8985682 
 1929 -1.056914 
 1930 -0.9961181 
 1931 -1.03251 
 1932 -1.078755 
 1933 -1.126563 
 1934 -1.04283 
 1935 -1.071693 
 1936 -1.053291 
 1937 -0.9407703 
 1938 -0.8857409 
 1939 -0.9062738 
 1940 -0.9173243 
 1941 -0.8330143 
 1942 -0.9322309 
 1943 -0.8851157 
 1944 -0.9094307 
 1945 -0.8490363 
 1946 -0.916434 
 1947 -0.9047737 
 1948 -0.7403497 
 1949 -0.8354749 
 1950 -0.8247668 
 1951 -0.8184648 
 1952 -0.8744105 
 1953 -0.9595459 
 1954 -0.9561481 
 1955 -0.9861208 
 1956 -0.8468022 
 1957 -0.8267143 
 1958 -0.9331051 
 1959 -0.7637785 
 1960 -0.7817869 
 1961 -0.7874929 
 1962 -0.7989235 
 1963 -0.8783072 
 1964 -1.010386 
 1965 -1.081042 
 1966 -0.9366616 
 1967 -0.9462951 
 1968 -0.9413205 
 1969 -0.8185133 
 1970 -0.7945316 
 1971 -0.7362398 
 1972 -0.8046888 
 1973 -0.7319032 
 1974 -0.6796084 
 1975 -0.695889 
 1976 -0.7201435 
 1977 -0.7398155 
 1978 -0.5277592 
 1979 -0.5338362 
 1980 -0.5124974 
 1981 -0.4230349 
 1982 -0.6313188 
 1983 -0.7631352 
 1984 -0.6477962 
 1985 -0.5911388 
 1986 -0.557353 
 1987 -0.308566 
 1988 -0.2673286 
 1989 -0.2459154 
 1990 -0.06187068 
 1991 -0.203436 
 1992 -0.3621083 
 1993 -0.2835577 
 1994 -0.3731774 
 1995 -0.3085133 
 1996 -0.1301937 
 1997 0.04488117 
 1998 0.1551108 
 1999 0.1493093 
 2000 0.2770654 
 2001 0.4704126 
 2002 0.4031701 
 2003 0.4367666 
 2004 0.4479043 
 2005 2.038633