Year Total 1801 0.06497 1802 0.06497 1803 0.06497 1804 0.06497 1805 0.06497 1806 0.06497 1807 0.06497 1808 0.06497 1809 0.06497 1810 0.06497 1811 0.06497 1812 0.06497 1813 0.06497 1814 0.06497 1815 0.06497 1816 0.06497 1817 0.06497 1818 0.06497 1819 0.06497 1820 0.06497 1821 -0.4228 1822 -0.4228 1823 -0.4228 1824 -0.4228 1825 -0.4229 1826 -0.4229 1827 -0.4228 1828 -0.4228 1829 -0.4228 1830 -0.4228 1831 -0.4228 1832 -0.4229 1833 -0.4228 1834 -0.4228 1835 -0.4228 1836 -0.4229 1837 -0.4228 1838 -0.4229 1839 -0.4228 1840 -0.4229 1841 -0.4228 1842 -0.4228 1843 -0.4228 1844 -0.4228 1845 -0.4229 1846 -0.4228 1847 -0.4229 1848 -0.4228 1849 -0.4228 1850 -0.4228 1851 -0.4229 1852 -0.4228 1853 -0.4228 1854 -0.4229 1855 -0.4228 1856 -0.4228 1857 -0.4229 1858 -0.4228 1859 -0.4228 1860 -0.4229 1861 -0.4228 1862 -0.4228 1863 -0.4229 1864 -0.4228 1865 -0.4228 1866 -0.4228 1867 -0.4229 1868 -0.4228 1869 -0.4228 1870 -0.4228 1871 0.8095 1872 0.8094 1873 0.8095 1874 0.8094 1875 0.8095 1876 0.8095 1877 0.8095 1878 0.8095 1879 0.8094 1880 0.8095 1881 0.8094 1882 0.8095 1883 0.8095 1884 0.8095 1885 0.8095 1886 0.8095 1887 0.8094 1888 0.8095 1889 0.8095 1890 0.8095 1891 0.8095 1892 0.2459 1893 1.236 1894 -0.7512 1895 1.231 1896 -2.741 1897 1.227 1898 0.2318 1899 0.2293 1900 -1.758 1901 -2.753 1902 5.981 1903 3.007 1904 4.985 1905 3.002 1906 7.951 1907 3.987 1908 2.003 1909 5.962 1910 0.01705 1911 19.82 1912 -0.292 1913 5.57 1914 1.523 1915 20.43 1916 -4.455 1917 12.46 1918 -18.39 1919 79.13 1920 -20.39 1921 2.497 1922 21.28 1923 8.354 1924 9.345 1925 -0.599 1926 4.368 1927 -6.569 1928 5.355 1929 4.357 1930 -13.54 1931 4.35 1932 4.705 1933 4.702 1934 4.698 1935 5.691 1936 5.687 1937 5.683 1938 -8.278 1939 -0.3062 1940 -0.31 1941 -0.3139 1942 -0.3178 1943 -0.3218 1944 -0.3258 1945 -0.3299 1946 -11.3 1947 -12.3 1948 6.634 1949 12.42 1950 21.29 1951 3.239 1952 -1.732 1953 14.32 1954 13.21 1955 -5.916 1956 22.56 1957 -7.96 1958 11.26 1959 5.584 1960 7.83 1961 3.961 1962 5.215 1963 3.699 1964 2.112 1965 1.035 1966 -0.5469 1967 0.8892 1968 0.4026 1969 4.897 1970 11.99 1971 5.599 1972 -2.508 1973 5.545 1974 6.853 1975 -12.43 1976 -3.53 1977 2.274 1978 8.476 1979 -2.513 1980 0.4608 1981 -3.494 1982 -6.922 1983 -4.566 1984 8.648 1985 5.08 1986 5.213 1987 4.795 1988 5.628 1989 5.086 1990 3.329 1991 5.282 1992 3.879 1993 4.85 1994 3.269 1995 4.023 1996 4.596 1997 4.198 1998 4.694 1999 4.429 2000 4.206 2001 4.539 2002 4.794 2003 5.224 2004 5.353 2005 6.196 2006 4.552 2007 6.46 2008 8.431 2009 4.658 2010 6.62 2011 15.14 2012 7.667 2013 5.178