# year    value 
 1900 -0.6482181 
 1901 -0.6303538 
 1902 -0.7264742 
 1903 -1.099088 
 1904 -0.8987461 
 1905 -0.8257593 
 1906 -0.7427638 
 1907 -0.6854259 
 1908 -0.7592179 
 1909 -0.7069535 
 1910 -0.6700796 
 1911 -0.599373 
 1912 -0.6961743 
 1913 -0.8893725 
 1914 -0.7098786 
 1915 -0.6749639 
 1916 -0.5253321 
 1917 -0.5777287 
 1918 -0.5918179 
 1919 -0.5688591 
 1920 -0.5181205 
 1921 -0.6132189 
 1922 -0.4947489 
 1923 -0.5046983 
 1924 -0.4399689 
 1925 -0.4664095 
 1926 -0.424288 
 1927 -0.5042036 
 1928 -0.5131463 
 1929 -0.5897837 
 1930 -0.5305709 
 1931 -0.5128181 
 1932 -0.5603964 
 1933 -0.4998724 
 1934 -0.484898 
 1935 -0.4873937 
 1936 -0.4470677 
 1937 -0.5200172 
 1938 -0.4611962 
 1939 -0.4432711 
 1940 -0.4994214 
 1941 -0.5065579 
 1942 -0.4474994 
 1943 -0.4532251 
 1944 -0.397216 
 1945 -0.4622531 
 1946 -0.4701411 
 1947 -0.382991 
 1948 -0.426785 
 1949 -0.4301477 
 1950 -0.3760197 
 1951 -0.4716464 
 1952 -0.4864531 
 1953 -0.4078314 
 1954 -0.447091 
 1955 -0.3875681 
 1956 -0.4726042 
 1957 -0.4441718 
 1958 -0.5086265 
 1959 -0.4654209 
 1960 -0.5062284 
 1961 -0.4985818 
 1962 -0.3915971 
 1963 -0.5575699 
 1964 -0.720739 
 1965 -0.7086275 
 1966 -0.6245642 
 1967 -0.6461262 
 1968 -0.7268171 
 1969 -0.7031221 
 1970 -0.5655895 
 1971 -0.4915583 
 1972 -0.4954301 
 1973 -0.3702041 
 1974 -0.4074891 
 1975 -0.500967 
 1976 -0.4631908 
 1977 -0.3386183 
 1978 -0.3500723 
 1979 -0.2979513 
 1980 -0.2786918 
 1981 -0.2138307 
 1982 -0.3474031 
 1983 -0.5999801 
 1984 -0.3642318 
 1985 -0.3080992 
 1986 -0.2731476 
 1987 -0.2613291 
 1988 -0.1076192 
 1989 -0.0970328 
 1990 -0.08414423 
 1991 -0.09246849 
 1992 -0.5552886 
 1993 -0.3915872 
 1994 -0.2005932 
 1995 -0.07999705 
 1996 0.03638629 
 1997 0.04574505 
 1998 0.08822604 
 1999 0.1106964 
 2000 0.2250351 
 2001 0.2689203 
 2002 0.3327533 
 2003 0.2933466 
 2004 0.3654275 
 2005 1.348256