1850 -0.391
1851 -0.258
1852 -0.217
1853 -0.329
1854 -0.24
1855 -0.284
1856 -0.428
1857 -0.476
1858 -0.422
1859 -0.424
1860 -0.516
1861 -0.482
1862 -0.526
1863 -0.477
1864 -0.431
1865 -0.322
1866 -0.345
1867 -0.402
1868 -0.207
1869 -0.347
1870 -0.357
1871 -0.382
1872 -0.256
1873 -0.348
1874 -0.438
1875 -0.342
1876 -0.334
1877 0.027
1878 -0.078
1879 -0.296
1880 -0.266
1881 -0.194
1882 -0.374
1883 -0.343
1884 -0.542
1885 -0.484
1886 -0.479
1887 -0.456
1888 -0.227
1889 -0.318
1890 -0.447
1891 -0.351
1892 -0.539
1893 -0.39
1894 -0.43
1895 -0.32
1896 -0.191
1897 -0.279
1898 -0.44
1899 -0.24
1900 -0.18
1901 -0.262
1902 -0.384
1903 -0.56
1904 -0.473
1905 -0.294
1906 -0.306
1907 -0.442
1908 -0.501
1909 -0.486
1910 -0.531
1911 -0.44
1912 -0.476
1913 -0.331
1914 -0.219
1915 -0.186
1916 -0.503
1917 -0.442
1918 -0.292
1919 -0.308
1920 -0.245
1921 -0.225
1922 -0.311
1923 -0.223
1924 -0.302
1925 -0.116
1926 -0.163
1927 -0.144
1928 -0.264
1929 -0.293
1930 -0.098
1931 -0.05
1932 -0.167
1933 -0.267
1934 -0.101
1935 -0.219
1936 -0.059
1937 0.047
1938 -0.033
1939 0.028
1940 0.072
1941 0.079
1942 -0.022
1943 0.114
1944 0.092
1945 0.025
1946 -0.067
1947 -0.025
1948 -0.064
1949 -0.165
1950 -0.221
1951 0.07
1952 0.05
1953 0.052
1954 -0.089
1955 -0.186
1956 -0.194
1957 0.086
1958 -0.008
1959 -0.035
1960 -0.008
1961 0.033
1962 -0.03
1963 0.001
1964 -0.23
1965 -0.131
1966 -0.081
1967 -0.029
1968 -0.088
1969 0.081
1970 -0.081
1971 -0.166
1972 0.025
1973 -0.064
1974 -0.105
1975 -0.182
1976 -0.142
1977 0.04
1978 -0.072
1979 0.105
1980 0.16
1981 0.093
1982 0.077
1983 0.125
1984 -0.008
1985 0.027
1986 0.036
1987 0.214
1988 0.159
1989 0.18
1990 0.278
1991 0.291
1992 0.078
1993 0.095
1994 0.283
1995 0.287
1996 0.229
1997 0.447
1998 0.479
1999 0.28
2000 0.317
2001 0.519
2002 0.485
2003 0.523
2004 0.453
2005 0.578
2006 0.572
2007 0.473
2008 0.463
2009 0.624
2010 0.559
2011 0.476
2012 0.546
2013 0.559
2014 0.66
2015 0.855