Year Total 1821 0.4665 1822 0.4665 1823 0.4665 1824 0.4665 1825 0.4665 1826 0.4665 1827 0.4665 1828 0.4665 1829 0.4665 1830 0.4665 1831 0.4665 1832 0.4665 1833 0.4665 1834 0.4665 1835 0.4665 1836 0.4665 1837 0.4665 1838 0.4665 1839 0.4665 1840 0.4665 1841 0.5421 1842 0.4534 1843 0.5853 1844 0.6023 1845 7.007 1846 -3.206 1847 2.219 1848 -1.194 1849 5.159 1850 3.262 1851 -3.78 1852 1.973 1853 -0.6508 1854 -0.0042 1855 3.104 1856 6.736 1857 4.01 1858 -5.291 1859 3.86 1860 8.69 1861 -5.319 1862 6.068 1863 -0.2527 1864 11.21 1865 0.5383 1866 -6.274 1867 1.208 1868 17.81 1869 -8.306 1870 3.364 1871 2.715 1872 -6.038 1873 6.081 1874 -0.103 1875 -2.269 1876 12.8 1877 2.83 1878 0.1221 1879 -0.8896 1880 0.7399 1881 4.636 1882 2.737 1883 0.9378 1884 -3.583 1885 8.39 1886 14.35 1887 2.618 1888 1.001 1889 10.53 1890 -6.464 1891 10.27 1892 -0.9743 1893 -0.6092 1894 2.159 1895 3.517 1896 0.08848 1897 0.7688 1898 7.606 1899 2.612 1900 -7.833 1901 0.3613 1902 7.973 1903 9.392 1904 -0.168 1905 1.842 1906 6.745 1907 4.163 1908 7.057 1909 16.43 1910 3.423 1911 1.352 1912 -0.4784 1913 1.558 1914 -4.444 1915 -48.67 1916 8.682 1917 7.931 1918 12.89 1919 5.018 1920 7.808 1921 8.499 1922 12.09 1923 6.587 1924 5.016 1925 7.269 1926 7.092 1927 7.168 1928 5.68 1929 8.934 1930 12.71 1931 12.78 1932 9.479 1933 9.089 1934 11.98 1935 6.39 1936 11.13 1937 11.25 1938 12.65 1939 12.54 1940 35.82 1941 4.739 1942 8.394 1943 7.95 1944 -0.9918 1945 0.614 1946 4.188 1947 4.63 1948 7.081 1949 6.994 1950 2.287 1951 5.371 1952 4.287 1953 3.773 1954 5.067 1955 6.89 1956 3.361 1957 4.658 1958 7.731 1959 5.949 1960 6.151 1961 3.897 1962 1.406 1963 0.8063 1964 1.585 1965 2.774 1966 3.553 1967 2.623 1968 -0.9323 1969 0.9542 1970 3.485 1971 1.605 1972 1.571 1973 2.976 1974 3.601 1975 2.438 1976 2.725 1977 3.132 1978 -0.2013 1979 -4.755 1980 5.282 1981 0.06147 1982 -36.16 1983 2.351 1984 3.923 1985 4.364 1986 2.75 1987 4.052 1988 6.102 1989 4.753 1990 5.078 1991 3.39 1992 1.05 1993 0.3614 1994 1.181 1995 2.062 1996 3.457 1997 1.745 1998 -2.983 1999 -0.1769 2000 2.851 2001 0.171 2002 0.2475 2003 1.749 2004 2.393 2005 1.918 2006 1.69 2007 2.127 2008 -1.082 2009 -5.512 2010 4.642 2011 -0.4812 2012 1.623 2013 1.682