Year Total 1801 0.07778 1802 0.07778 1803 0.07778 1804 0.07778 1805 0.07778 1806 0.07778 1807 0.07778 1808 0.07778 1809 0.07778 1810 0.07778 1811 0.07778 1812 0.07778 1813 0.07778 1814 0.07778 1815 0.07778 1816 0.07778 1817 0.07778 1818 0.07778 1819 0.07778 1820 0.07778 1821 0.8545 1822 0.8545 1823 0.8544 1824 0.8545 1825 0.8545 1826 0.8545 1827 0.8545 1828 0.8544 1829 0.8545 1830 0.8545 1831 0.8545 1832 0.8545 1833 0.8545 1834 0.8544 1835 0.8545 1836 0.8545 1837 0.8544 1838 0.8545 1839 0.8545 1840 0.8544 1841 0.8545 1842 0.8545 1843 0.8544 1844 0.8545 1845 0.8544 1846 0.8545 1847 0.8544 1848 0.8544 1849 0.8545 1850 0.8544 1851 0.8545 1852 0.8545 1853 0.8544 1854 0.8545 1855 0.8544 1856 0.8545 1857 0.8545 1858 0.8545 1859 0.8544 1860 0.8545 1861 0.8544 1862 0.8545 1863 0.8545 1864 0.8544 1865 0.8545 1866 0.8545 1867 0.8545 1868 0.8545 1869 0.8545 1870 0.8545 1871 0.8544 1872 0.8545 1873 0.8545 1874 0.8544 1875 0.8545 1876 0.8544 1877 0.8545 1878 0.8545 1879 0.8544 1880 0.8545 1881 0.8545 1882 0.8545 1883 0.8545 1884 0.8545 1885 0.8544 1886 0.8544 1887 0.8545 1888 0.8545 1889 0.8545 1890 0.8545 1891 0.8545 1892 0.8545 1893 0.8544 1894 0.8545 1895 0.8544 1896 0.8544 1897 0.8545 1898 0.8545 1899 0.8545 1900 0.8544 1901 0.8545 1902 0.8545 1903 0.8545 1904 0.8544 1905 0.8545 1906 0.8545 1907 0.8545 1908 0.8544 1909 0.8545 1910 0.8545 1911 0.8544 1912 0.8545 1913 0.8545 1914 0.8544 1915 0.8545 1916 0.8545 1917 0.8545 1918 0.8544 1919 0.8545 1920 0.8544 1921 0.8545 1922 0.8545 1923 0.8544 1924 0.8545 1925 0.8545 1926 0.8545 1927 0.8545 1928 0.8544 1929 0.8545 1930 0.8545 1931 0.8545 1932 0.8545 1933 0.8545 1934 0.8545 1935 0.8545 1936 0.8545 1937 0.8545 1938 0.8545 1939 0.8545 1940 0.8545 1941 0.8545 1942 0.8545 1943 0.8544 1944 0.8545 1945 0.8545 1946 0.8545 1947 0.8544 1948 0.8545 1949 0.8545 1950 0.8545 1951 5.95 1952 3.205 1953 4.04 1954 5.449 1955 3.176 1956 3.842 1957 3.892 1958 2.867 1959 5.807 1960 1.469 1961 -14.54 1962 8.451 1963 4.313 1964 5.141 1965 2.929 1966 3.931 1967 8.732 1968 -1.247 1969 -1.314 1970 26.27 1971 6.718 1972 -8.391 1973 7.645 1974 -1.468 1975 0.02352 1976 7.565 1977 12.1 1978 -1.212 1979 -0.1241 1980 6.4 1981 9.695 1982 0.5736 1983 4.025 1984 0.8623 1985 12.93 1986 5.141 1987 4.833 1988 4.116 1989 1.88 1990 3.635 1991 4.788 1992 -0.3958 1993 -1.321 1994 -3.195 1995 -12.32 1996 -7.942 1997 0.7299 1998 2.981 1999 -2.931 2000 -1.151 2001 1.218 2002 3.776 2003 -1.689 2004 4.048 2005 0.2241 2006 6.495 2007 5.939 2008 5.722 2009 3.937 2010 3.983 2011 4.084 2012 3.644 2013 3.91