# year    value 
 1900 -1.181128 
 1901 -1.255536 
 1902 -1.241792 
 1903 -1.619074 
 1904 -1.626536 
 1905 -1.554978 
 1906 -1.513144 
 1907 -1.589663 
 1908 -1.487916 
 1909 -1.477053 
 1910 -1.452235 
 1911 -1.460306 
 1912 -1.612509 
 1913 -1.670297 
 1914 -1.550542 
 1915 -1.498252 
 1916 -1.424168 
 1917 -1.29075 
 1918 -1.135278 
 1919 -1.24205 
 1920 -1.13108 
 1921 -1.127578 
 1922 -1.192109 
 1923 -1.058612 
 1924 -1.157057 
 1925 -1.115061 
 1926 -1.139177 
 1927 -1.041774 
 1928 -0.983495 
 1929 -1.075732 
 1930 -1.156472 
 1931 -1.050229 
 1932 -1.111769 
 1933 -1.198411 
 1934 -1.166685 
 1935 -1.139899 
 1936 -1.130607 
 1937 -0.9691005 
 1938 -0.9861917 
 1939 -1.029529 
 1940 -0.953894 
 1941 -0.9934724 
 1942 -1.059673 
 1943 -0.9963626 
 1944 -1.015384 
 1945 -0.8847854 
 1946 -1.062665 
 1947 -0.9450715 
 1948 -0.9206105 
 1949 -0.905281 
 1950 -0.9059413 
 1951 -0.89733 
 1952 -0.9273467 
 1953 -0.9345284 
 1954 -0.9942639 
 1955 -0.9779019 
 1956 -0.9468541 
 1957 -0.9141757 
 1958 -0.9586833 
 1959 -0.9214036 
 1960 -0.8856175 
 1961 -0.891253 
 1962 -0.8897398 
 1963 -0.9694655 
 1964 -1.059153 
 1965  -1.1277 
 1966 -1.063803 
 1967 -1.001068 
 1968 -1.070102 
 1969 -0.966867 
 1970 -0.9831509 
 1971 -0.940307 
 1972 -0.8261712 
 1973 -0.8428691 
 1974 -0.824114 
 1975 -0.826754 
 1976 -0.8575867 
 1977 -0.7953568 
 1978 -0.6481581 
 1979 -0.526924 
 1980 -0.5103925 
 1981 -0.4175662 
 1982 -0.6586904 
 1983 -0.8549109 
 1984 -0.688212 
 1985 -0.5428258 
 1986 -0.6126249 
 1987 -0.3378317 
 1988 -0.328464 
 1989 -0.3111608 
 1990 -0.1213462 
 1991 -0.1841052 
 1992 -0.4233435 
 1993 -0.3721136 
 1994 -0.3079291 
 1995 -0.2668089 
 1996 -0.1386181 
 1997 0.0371735 
 1998 0.1267124 
 1999 0.2329082 
 2000 0.2963007 
 2001 0.4321753 
 2002 0.4558565 
 2003 0.5196548 
 2004 0.529893 
 2005 1.959895