Year Total 1801 0.3226 1802 0.3226 1803 0.3226 1804 0.3226 1805 0.3226 1806 0.3226 1807 0.3226 1808 0.3226 1809 0.3226 1810 0.3226 1811 0.3226 1812 0.3226 1813 0.3225 1814 0.3226 1815 0.3226 1816 0.3226 1817 0.3226 1818 0.3226 1819 0.3226 1820 0.3226 1821 0.9111 1822 0.9111 1823 0.9111 1824 0.9111 1825 0.9111 1826 0.9111 1827 0.9111 1828 0.9111 1829 0.9111 1830 0.9111 1831 0.9111 1832 0.9111 1833 0.9111 1834 0.9111 1835 0.9111 1836 0.9111 1837 0.9111 1838 0.9111 1839 0.9111 1840 0.9111 1841 0.9111 1842 0.9111 1843 0.9111 1844 0.9111 1845 0.9111 1846 0.9111 1847 0.9111 1848 0.9111 1849 0.9111 1850 0.9111 1851 0.9111 1852 0.9111 1853 0.9111 1854 0.9111 1855 0.9111 1856 0.9111 1857 0.9111 1858 0.9111 1859 0.9111 1860 0.9111 1861 0.9111 1862 0.9111 1863 0.9111 1864 0.9111 1865 0.9111 1866 0.9111 1867 0.9111 1868 0.9111 1869 0.9111 1870 0.9111 1871 0.9111 1872 0.9111 1873 0.9111 1874 0.9111 1875 0.9111 1876 0.9111 1877 0.9111 1878 0.9111 1879 0.9111 1880 0.9111 1881 0.9111 1882 0.9111 1883 0.9111 1884 0.9111 1885 0.9111 1886 0.9111 1887 0.9111 1888 0.9111 1889 0.9111 1890 0.9111 1891 0.9111 1892 0.9111 1893 0.9111 1894 0.9111 1895 0.9111 1896 0.9111 1897 0.9111 1898 0.9111 1899 0.9111 1900 0.9111 1901 0.9111 1902 0.9111 1903 0.9111 1904 0.9111 1905 0.9111 1906 0.9111 1907 0.9111 1908 0.9111 1909 0.9111 1910 0.9111 1911 0.9111 1912 0.9111 1913 0.9111 1914 0.9111 1915 0.9111 1916 0.9111 1917 0.9111 1918 0.9111 1919 0.9111 1920 0.9111 1921 0.9111 1922 0.9111 1923 0.9111 1924 0.9111 1925 0.9111 1926 0.9111 1927 0.9111 1928 0.9111 1929 0.9111 1930 0.9111 1931 0.9111 1932 0.9111 1933 0.9111 1934 0.9111 1935 0.9111 1936 0.9111 1937 0.9111 1938 0.9111 1939 0.9111 1940 0.9111 1941 0.9111 1942 0.9111 1943 0.9111 1944 0.9111 1945 0.9111 1946 0.9111 1947 0.9111 1948 0.9111 1949 0.9111 1950 0.9111 1951 3.428 1952 3.523 1953 3.408 1954 2.302 1955 6.118 1956 0.4295 1957 2.142 1958 4.66 1959 5.292 1960 2.312 1961 2.78 1962 6.8 1963 -3.648 1964 4.281 1965 2.252 1966 3.157 1967 6.751 1968 11.1 1969 11.76 1970 5.26 1971 6.526 1972 2.636 1973 5.111 1974 -7.916 1975 -14.5 1976 -5.263 1977 0.3042 1978 0.5287 1979 1.023 1980 3.041 1981 2.108 1982 -2.24 1983 -6.636 1984 -2.316 1985 -9.055 1986 1.233 1987 5.459 1988 8.64 1989 4.721 1990 1.288 1991 5.183 1992 -6.847 1993 8.618 1994 3.38 1995 1.266 1996 6.949 1997 11.32 1998 12.77 1999 7.776 2000 2.057 2001 13.74 2002 8.266 2003 8.899 2004 8.569 2005 7.292 2006 9.224 2007 7.749 2008 7.241 2009 6.703 2010 7.429 2011 7.642 2012 6.947 2013 6.897