Year Total 1801 0.1659 1802 0.1659 1803 0.1659 1804 0.1659 1805 0.1659 1806 0.1659 1807 0.1659 1808 0.1659 1809 0.1659 1810 0.1659 1811 0.1659 1812 0.1659 1813 0.1659 1814 0.1659 1815 0.1659 1816 0.1659 1817 0.1659 1818 0.1659 1819 0.1659 1820 0.1659 1821 1.833 1822 1.834 1823 1.835 1824 1.831 1825 1.832 1826 1.837 1827 1.833 1828 1.834 1829 1.829 1830 1.835 1831 1.836 1832 1.831 1833 1.832 1834 1.837 1835 1.833 1836 1.833 1837 1.834 1838 1.829 1839 1.834 1840 1.835 1841 1.835 1842 1.831 1843 1.835 1844 1.831 1845 1.836 1846 1.831 1847 1.832 1848 1.836 1849 1.832 1850 1.832 1851 1.836 1852 1.832 1853 1.836 1854 1.832 1855 1.832 1856 1.836 1857 1.831 1858 1.835 1859 1.831 1860 1.835 1861 1.835 1862 1.834 1863 1.83 1864 1.834 1865 1.833 1866 1.837 1867 1.832 1868 1.832 1869 1.835 1870 1.831 1871 1.834 1872 1.834 1873 1.833 1874 1.833 1875 1.836 1876 1.831 1877 1.834 1878 1.834 1879 1.833 1880 1.832 1881 1.835 1882 1.834 1883 1.833 1884 1.832 1885 1.832 1886 1.834 1887 1.833 1888 1.836 1889 1.831 1890 1.834 1891 1.833 1892 1.835 1893 1.831 1894 1.833 1895 1.835 1896 1.834 1897 1.833 1898 1.832 1899 1.834 1900 1.833 1901 1.835 1902 1.833 1903 1.832 1904 1.834 1905 1.833 1906 1.834 1907 1.833 1908 1.832 1909 1.833 1910 1.835 1911 1.834 1912 1.832 1913 1.834 1914 3.873 1915 3.875 1916 3.876 1917 3.874 1918 3.873 1919 3.874 1920 3.875 1921 3.874 1922 3.875 1923 3.873 1924 3.874 1925 3.875 1926 3.874 1927 3.875 1928 3.876 1929 3.874 1930 3.875 1931 3.873 1932 3.876 1933 3.872 1934 3.875 1935 3.876 1936 3.874 1937 3.875 1938 3.873 1939 3.876 1940 3.874 1941 3.874 1942 3.873 1943 3.875 1944 3.873 1945 3.876 1946 3.874 1947 3.874 1948 3.875 1949 3.873 1950 3.875 1951 3.634 1952 3.628 1953 3.592 1954 3.517 1955 3.477 1956 3.461 1957 3.476 1958 3.526 1959 3.594 1960 3.65 1961 3.829 1962 4.618 1963 4.746 1964 4.804 1965 4.767 1966 4.655 1967 4.596 1968 4.467 1969 4.386 1970 4.357 1971 4.116 1972 2.197 1973 2.102 1974 2.019 1975 1.95 1976 1.912 1977 3.159 1978 3.169 1979 3.182 1980 3.184 1981 3.41 1982 6.777 1983 6.776 1984 6.777 1985 6.776 1986 12.22 1987 4.137 1988 4.18 1989 4.178 1990 4.179 1991 0.2026 1992 2.773 1993 2.729 1994 2.673 1995 2.622 1996 2.591 1997 4.195 1998 4.179 1999 4.169 2000 4.159 2001 4.138 2002 1.685 2003 1.661 2004 1.632 2005 1.606 2006 1.58