1880 -0.342937 1881 -0.240198 1882 -0.290302 1883 -0.349888 1884 -0.450265 1885 -0.501899 1886 -0.516936 1887 -0.573833 1888 -0.397428 1889 -0.252200 1890 -0.503918 1891 -0.422126 1892 -0.548356 1893 -0.483092 1894 -0.486024 1895 -0.437833 1896 -0.337395 1897 -0.309840 1898 -0.485289 1899 -0.345975 1900 -0.236491 1901 -0.278807 1902 -0.473352 1903 -0.545675 1904 -0.612608 1905 -0.415238 1906 -0.359439 1907 -0.514048 1908 -0.482425 1909 -0.586041 1910 -0.490783 1911 -0.565536 1912 -0.546028 1913 -0.471219 1914 -0.261345 1915 -0.287664 1916 -0.471865 1917 -0.576483 1918 -0.382983 1919 -0.338191 1920 -0.282314 1921 -0.290665 1922 -0.341528 1923 -0.318150 1924 -0.354456 1925 -0.294416 1926 -0.164520 1927 -0.291974 1928 -0.309693 1929 -0.443336 1930 -0.245814 1931 -0.117590 1932 -0.198796 1933 -0.366751 1934 -0.166901 1935 -0.255227 1936 -0.156880 1937 0.0261966 1938 -0.0564394 1939 -0.0824819 1940 0.000718083 1941 -0.0245785 1942 -0.0488322 1943 0.100949 1944 0.0879738 1945 -0.0915600 1946 -0.142802 1947 -0.100942 1948 -0.192750 1949 -0.194167 1950 -0.262355 1951 -0.120075 1952 -0.0152451 1953 0.0151718 1954 -0.170080 1955 -0.151613 1956 -0.234010 1957 -0.0144395 1958 -0.0261313 1959 -0.0454735 1960 -0.0991497 1961 -0.00935621 1962 -0.0786559 1963 -0.0446243 1964 -0.301394 1965 -0.179133 1966 -0.109390 1967 -0.0647903 1968 -0.143708 1969 -0.0180057 1970 -0.0409980 1971 -0.164899 1972 -0.0674055 1973 0.0859878 1974 -0.132605 1975 -0.0778050 1976 -0.196605 1977 0.150253 1978 0.0335315 1979 0.0901432 1980 0.208927 1981 0.289724 1982 0.0587109 1983 0.241341 1984 0.0663431 1985 0.0561525 1986 0.0916898 1987 0.230506 1988 0.295415 1989 0.177456 1990 0.363017 1991 0.345595 1992 0.151160 1993 0.182082 1994 0.260228 1995 0.402790 1996 0.290498 1997 0.427520 1998 0.584896 1999 0.331682 2000 0.327439 2001 0.488513 2002 0.583941 2003 0.559064 2004 0.504548 2005 0.643554 2006 0.591298 2007 0.625320 2008 0.490724 2009 0.628822 2010 0.706313 2011 0.574298 2012 0.586751 2013 0.644072 2014 0.678687 2015 0.824591 2016 0.938453 2017 0.847806 2018 0.789144 2019 0.931921 2020 0.958575 2021 0.801621 2022 0.846954 2023 0.849949