1850 -0.379 1851 -0.229 1852 -0.187 1853 -0.232 1854 -0.12 1855 -0.246 1856 -0.4 1857 -0.405 1858 -0.428 1859 -0.289 1860 -0.388 1861 -0.299 1862 -0.617 1863 -0.222 1864 -0.521 1865 -0.263 1866 -0.289 1867 -0.342 1868 -0.209 1869 -0.204 1870 -0.226 1871 -0.37 1872 -0.224 1873 -0.326 1874 -0.293 1875 -0.496 1876 -0.338 1877 -0.056 1878 0.124 1879 -0.244 1880 -0.256 1881 -0.3 1882 -0.28 1883 -0.373 1884 -0.441 1885 -0.413 1886 -0.3 1887 -0.298 1888 -0.292 1889 -0.185 1890 -0.371 1891 -0.34 1892 -0.474 1893 -0.542 1894 -0.389 1895 -0.414 1896 -0.202 1897 -0.21 1898 -0.29 1899 -0.248 1900 -0.138 1901 -0.2 1902 -0.392 1903 -0.419 1904 -0.51 1905 -0.387 1906 -0.281 1907 -0.528 1908 -0.498 1909 -0.498 1910 -0.48 1911 -0.469 1912 -0.526 1913 -0.511 1914 -0.312 1915 -0.229 1916 -0.438 1917 -0.521 1918 -0.414 1919 -0.422 1920 -0.351 1921 -0.203 1922 -0.332 1923 -0.3 1924 -0.281 1925 -0.173 1926 -0.086 1927 -0.162 1928 -0.176 1929 -0.32 1930 -0.042 1931 -0.013 1932 -0.055 1933 -0.222 1934 -0.058 1935 -0.087 1936 -0.034 1937 0.086 1938 0.144 1939 0.113 1940 0.007 1941 0.069 1942 0.006 1943 0.07 1944 0.148 1945 -0.03 1946 -0.042 1947 -0.108 1948 -0.055 1949 -0.101 1950 -0.238 1951 -0.04 1952 -0.022 1953 0.099 1954 -0.131 1955 -0.127 1956 -0.294 1957 -0.033 1958 0.083 1959 -0.007 1960 -0.033 1961 0.04 1962 0.081 1963 0.118 1964 -0.207 1965 -0.183 1966 -0.054 1967 -0.027 1968 -0.086 1969 -0.072 1970 -0.071 1971 -0.189 1972 -0.206 1973 0.026 1974 -0.243 1975 -0.136 1976 -0.284 1977 0.003 1978 -0.048 1979 0.026 1980 0.059 1981 0.197 1982 -0.01 1983 0.158 1984 -0.085 1985 -0.133 1986 0.015 1987 0.156 1988 0.203 1989 0.147 1990 0.34 1991 0.24 1992 0.052 1993 0.085 1994 0.232 1995 0.386 1996 0.13 1997 0.408 1998 0.595 1999 0.385 2000 0.363 2001 0.484