Year Total 1800 6.95 1801 6.95 1802 6.95 1803 6.95 1804 6.95 1805 6.95 1806 6.95 1807 6.95 1808 6.95 1809 6.95 1810 6.95 1811 6.95 1812 6.95 1813 6.95 1814 6.95 1815 6.95 1816 6.95 1817 6.95 1818 6.95 1819 6.95 1820 6.95 1821 6.95 1822 6.95 1823 6.95 1824 6.95 1825 6.95 1826 6.95 1827 6.95 1828 6.95 1829 6.95 1830 6.95 1831 6.95 1832 6.95 1833 6.95 1834 6.95 1835 6.95 1836 6.95 1837 6.95 1838 6.95 1839 6.95 1840 6.95 1841 6.95 1842 6.95 1843 6.95 1844 6.95 1845 6.95 1846 6.95 1847 6.95 1848 6.95 1849 6.95 1850 6.95 1851 6.95 1852 6.95 1853 6.95 1854 6.95 1855 6.95 1856 6.95 1857 6.95 1858 6.95 1859 6.95 1860 6.95 1861 6.95 1862 6.95 1863 6.95 1864 6.95 1865 6.95 1866 6.95 1867 6.95 1868 6.95 1869 6.95 1870 6.95 1871 6.95 1872 6.95 1873 6.95 1874 6.95 1875 6.95 1876 6.95 1877 6.95 1878 6.95 1879 6.95 1880 6.95 1881 6.95 1882 6.95 1883 6.95 1884 6.95 1885 6.95 1886 6.95 1887 6.95 1888 6.95 1889 6.95 1890 6.95 1891 6.95 1892 6.95 1893 6.95 1894 6.95 1895 6.95 1896 6.95 1897 6.95 1898 6.95 1899 6.95 1900 6.95 1901 6.95 1902 6.95 1903 6.95 1904 6.95 1905 6.95 1906 6.95 1907 6.95 1908 6.95 1909 6.95 1910 6.95 1911 6.95 1912 6.95 1913 6.95 1914 6.95 1915 6.95 1916 6.95 1917 6.95 1918 6.95 1919 6.95 1920 6.95 1921 6.95 1922 6.95 1923 6.95 1924 6.95 1925 6.95 1926 6.95 1927 6.95 1928 6.95 1929 6.95 1930 6.95 1931 6.95 1932 6.95 1933 6.95 1934 6.95 1935 6.95 1936 6.95 1937 6.95 1938 6.95 1939 6.95 1940 6.95 1941 6.95 1942 6.95 1943 6.95 1944 6.95 1945 6.95 1946 6.95 1947 6.95 1948 6.95 1949 6.95 1950 6.95 1951 6.95 1952 6.95 1953 6.95 1954 6.95 1955 6.95 1956 6.95 1957 6.96 1958 6.96 1959 6.97 1960 6.97 1961 6.96 1962 6.96 1963 6.94 1964 6.91 1965 6.87 1966 6.81 1967 6.75 1968 6.67 1969 6.57 1970 6.47 1971 6.33 1972 6.18 1973 6 1974 5.83 1975 5.68 1976 5.59 1977 5.56 1978 5.6 1979 5.71 1980 5.87 1981 6.04 1982 6.19 1983 6.3 1984 6.34 1985 6.31 1986 6.23 1987 6.1 1988 5.94 1989 5.78 1990 5.6 1991 5.42 1992 5.24 1993 5.05 1994 4.87 1995 4.69 1996 4.5 1997 4.33 1998 4.15 1999 3.97 2000 3.81 2001 3.65 2002 3.52 2003 3.41 2004 3.31 2005 3.23 2006 3.16 2007 3.09 2008 3.02 2009 2.95 2010 2.88 2011 2.81 2012 2.74 2013 2.68 2014 2.63 2015 2.59 2016 2.56 2017 2.53 2018 2.5