Year Total 1800 6.41 1801 6.41 1802 6.41 1803 6.41 1804 6.41 1805 6.41 1806 6.41 1807 6.41 1808 6.41 1809 6.41 1810 6.41 1811 6.41 1812 6.41 1813 6.41 1814 6.41 1815 6.41 1816 6.41 1817 6.41 1818 6.41 1819 6.41 1820 6.41 1821 6.41 1822 6.41 1823 6.41 1824 6.41 1825 6.41 1826 6.41 1827 6.41 1828 6.41 1829 6.41 1830 6.41 1831 6.41 1832 6.41 1833 6.41 1834 6.41 1835 6.41 1836 6.41 1837 6.41 1838 6.41 1839 6.41 1840 6.41 1841 6.41 1842 6.41 1843 6.41 1844 6.41 1845 6.41 1846 6.41 1847 6.41 1848 6.41 1849 6.41 1850 6.41 1851 6.41 1852 6.41 1853 6.41 1854 6.41 1855 6.41 1856 6.41 1857 6.41 1858 6.41 1859 6.41 1860 6.41 1861 6.41 1862 6.41 1863 6.41 1864 6.41 1865 6.41 1866 6.41 1867 6.41 1868 6.41 1869 6.41 1870 6.41 1871 6.41 1872 6.41 1873 6.41 1874 6.41 1875 6.41 1876 6.41 1877 6.41 1878 6.41 1879 6.41 1880 6.41 1881 6.41 1882 6.41 1883 6.41 1884 6.41 1885 6.41 1886 6.41 1887 6.41 1888 6.41 1889 6.41 1890 6.41 1891 6.41 1892 6.41 1893 6.41 1894 6.41 1895 6.41 1896 6.41 1897 6.41 1898 6.41 1899 6.41 1900 6.41 1901 6.41 1902 6.41 1903 6.41 1904 6.41 1905 6.41 1906 6.41 1907 6.41 1908 6.41 1909 6.41 1910 6.41 1911 6.41 1912 6.41 1913 6.41 1914 6.41 1915 6.41 1916 6.41 1917 6.41 1918 6.41 1919 6.41 1920 6.41 1921 6.41 1922 6.41 1923 6.41 1924 6.41 1925 6.41 1926 6.363 1927 6.315 1928 6.268 1929 6.22 1930 6.173 1931 6.125 1932 6.078 1933 6.03 1934 5.983 1935 5.936 1936 5.888 1937 5.841 1938 5.793 1939 5.746 1940 5.698 1941 5.651 1942 5.604 1943 5.556 1944 5.509 1945 5.461 1946 5.414 1947 5.366 1948 5.319 1949 5.271 1950 5.224 1951 5.223 1952 5.223 1953 5.223 1954 5.223 1955 5.223 1956 5.223 1957 5.223 1958 5.224 1959 5.224 1960 5.224 1961 5.224 1962 5.223 1963 5.222 1964 5.22 1965 5.222 1966 5.234 1967 5.255 1968 5.28 1969 5.302 1970 5.304 1971 5.264 1972 5.173 1973 5.027 1974 4.83 1975 4.596 1976 4.345 1977 4.1 1978 3.881 1979 3.696 1980 3.551 1981 3.44 1982 3.351 1983 3.274 1984 3.205 1985 3.144 1986 3.093 1987 3.053 1988 3.024 1989 3.002 1990 2.983 1991 2.961 1992 2.93 1993 2.889 1994 2.837 1995 2.772 1996 2.697 1997 2.617 1998 2.538 1999 2.461 2000 2.393 2001 2.337 2002 2.294 2003 2.263 2004 2.245 2005 2.235 2006 2.231 2007 2.227 2008 2.221 2009 2.209 2010 2.193 2011 2.172 2012 2.149 2013 2.127 2014 2.106 2015 2.086 2016 2.068 2017 2.052 2018 2.036 2019 2.022 2020 2.008 2021 1.995 2022 1.983 2023 1.971 2024 1.96 2030 1.904 2040 1.853 2050 1.838 2070 1.843 2080 1.852 2099 1.87