# year    value 
 1900 -0.6000546 
 1901 -0.5929946 
 1902 -0.6491815 
 1903 -1.112596 
 1904 -1.042777 
 1905 -0.8386843 
 1906 -0.7159661 
 1907 -0.6433402 
 1908 -0.5234323 
 1909 -0.6737036 
 1910 -0.6533378 
 1911 -0.846157 
 1912 -0.9090968 
 1913 -0.8405675 
 1914 -0.682275 
 1915 -0.6726264 
 1916 -0.7695533 
 1917 -0.5104884 
 1918 -0.4629991 
 1919 -0.5599513 
 1920 -0.6672489 
 1921 -0.5149638 
 1922 -0.4631385 
 1923 -0.5663321 
 1924 -0.6756643 
 1925 -0.4744895 
 1926 -0.5072122 
 1927 -0.4861683 
 1928 -0.5605359 
 1929 -0.58769 
 1930 -0.5542007 
 1931 -0.552445 
 1932 -0.5000018 
 1933 -0.5669004 
 1934 -0.6023749 
 1935 -0.5139268 
 1936 -0.5526491 
 1937 -0.4768187 
 1938 -0.4852939 
 1939 -0.4755461 
 1940 -0.4458662 
 1941 -0.3962232 
 1942 -0.5287481 
 1943 -0.4766551 
 1944 -0.4506879 
 1945 -0.4694802 
 1946 -0.5107322 
 1947 -0.4906919 
 1948 -0.5679706 
 1949 -0.3990501 
 1950 -0.3734153 
 1951 -0.3564033 
 1952 -0.4089256 
 1953 -0.3285794 
 1954 -0.4822374 
 1955 -0.5077533 
 1956 -0.5249334 
 1957 -0.5282992 
 1958 -0.5348986 
 1959 -0.5336544 
 1960 -0.4899282 
 1961 -0.4161264 
 1962 -0.4896808 
 1963 -0.4921365 
 1964 -0.7934364 
 1965 -0.7427934 
 1966 -0.7228145 
 1967 -0.6251466 
 1968 -0.6225926 
 1969 -0.752557 
 1970 -0.6206731 
 1971 -0.4743167 
 1972 -0.5123808 
 1973 -0.5371558 
 1974 -0.5171588 
 1975 -0.5377119 
 1976 -0.4749055 
 1977 -0.446306 
 1978 -0.3825125 
 1979 -0.2296685 
 1980 -0.3286064 
 1981 -0.2167067 
 1982 -0.4639444 
 1983 -0.6759285 
 1984 -0.4496178 
 1985 -0.4095608 
 1986 -0.1871941 
 1987 -0.306738 
 1988 -0.1755217 
 1989 -0.1133147 
 1990 -0.1773223 
 1991 -0.08704196 
 1992 -0.6277745 
 1993 -0.4811592 
 1994 -0.03217315 
 1995 -0.2073758 
 1996 -0.07407499 
 1997 0.1460572 
 1998 0.2465748 
 1999 0.03958048 
 2000 0.3858355 
 2001 0.1885323 
 2002 0.2907951 
 2003 0.4036689 
 2004 0.3898628 
 2005 1.296646