Year Total 1800 6.03 1801 6.03 1802 6.03 1803 6.03 1804 6.03 1805 6.03 1806 6.03 1807 6.03 1808 6.03 1809 6.03 1810 6.03 1811 6.03 1812 6.03 1813 6.03 1814 6.03 1815 6.03 1816 6.03 1817 6.03 1818 6.03 1819 6.03 1820 6.03 1821 6.03 1822 6.03 1823 6.03 1824 6.03 1825 6.03 1826 6.03 1827 6.03 1828 6.03 1829 6.03 1830 6.03 1831 6.03 1832 6.03 1833 6.03 1834 6.03 1835 6.03 1836 6.03 1837 6.03 1838 6.03 1839 6.03 1840 6.03 1841 6.03 1842 6.03 1843 6.03 1844 6.03 1845 6.03 1846 6.03 1847 6.03 1848 6.03 1849 6.03 1850 6.03 1851 5.81 1852 5.59 1853 5.36 1854 5.14 1855 4.92 1856 4.7 1857 4.47 1858 4.25 1859 4.03 1860 3.81 1861 3.95 1862 3.87 1863 3.78 1864 3.94 1865 3.73 1866 4.03 1867 3.83 1868 3.85 1869 3.86 1870 3.77 1871 3.81 1872 3.83 1873 3.7 1874 3.91 1875 3.78 1876 3.97 1877 3.82 1878 3.64 1879 3.32 1880 3.27 1881 3.28 1882 3.38 1883 3.35 1884 3.83 1885 3.82 1886 4.01 1887 4.19 1888 4.38 1889 4.57 1890 4.73 1891 4.8 1892 4.88 1893 4.95 1894 5.03 1895 5.1 1896 5.18 1897 5.25 1898 5.32 1899 5.4 1900 5.47 1901 5.35 1902 5.22 1903 5.1 1904 4.97 1905 4.85 1906 4.72 1907 4.6 1908 4.47 1909 4.35 1910 4.22 1911 4.09 1912 3.97 1913 3.84 1914 3.72 1915 3.59 1916 3.47 1917 3.34 1918 3.22 1919 3.09 1920 2.97 1921 2.84 1922 2.88 1923 2.55 1924 2.61 1925 3.52 1926 4.02 1927 3.86 1928 4.09 1929 3.87 1930 4.19 1931 3.83 1932 3.8 1933 3.84 1934 4.17 1935 3.78 1936 3.69 1937 3.52 1938 3.49 1939 3.34 1940 3.32 1941 3.22 1942 3.13 1943 3.03 1944 2.93 1945 2.84 1946 2.74 1947 2.65 1948 2.55 1949 2.46 1950 2.36 1951 2.38 1952 2.4 1953 2.41 1954 2.41 1955 2.41 1956 2.4 1957 2.39 1958 2.37 1959 2.35 1960 2.33 1961 2.32 1962 2.32 1963 2.34 1964 2.37 1965 2.41 1966 2.46 1967 2.51 1968 2.54 1969 2.56 1970 2.57 1971 2.57 1972 2.55 1973 2.54 1974 2.52 1975 2.5 1976 2.47 1977 2.44 1978 2.39 1979 2.34 1980 2.27 1981 2.19 1982 2.1 1983 2 1984 1.9 1985 1.81 1986 1.71 1987 1.63 1988 1.57 1989 1.51 1990 1.47 1991 1.44 1992 1.42 1993 1.4 1994 1.38 1995 1.37 1996 1.36 1997 1.35 1998 1.33 1999 1.33 2000 1.32 2001 1.33 2002 1.34 2003 1.36 2004 1.38 2005 1.4 2006 1.42 2007 1.44 2008 1.44 2009 1.43 2010 1.41 2011 1.39 2012 1.37 2013 1.35 2014 1.33 2015 1.31 2016 1.31 2017 1.3 2018 1.3