Year Total 1800 5.81 1801 5.81 1802 5.81 1803 5.81 1804 5.81 1805 5.81 1806 5.81 1807 5.81 1808 5.81 1809 5.81 1810 5.81 1811 5.81 1812 5.81 1813 5.81 1814 5.81 1815 5.81 1816 5.81 1817 5.81 1818 5.81 1819 5.81 1820 5.81 1821 5.81 1822 5.81 1823 5.81 1824 5.81 1825 5.81 1826 5.81 1827 5.81 1828 5.81 1829 5.81 1830 5.81 1831 5.81 1832 5.81 1833 5.81 1834 5.81 1835 5.81 1836 5.81 1837 5.81 1838 5.81 1839 5.81 1840 5.81 1841 5.81 1842 5.81 1843 5.81 1844 5.81 1845 5.81 1846 5.81 1847 5.81 1848 5.81 1849 5.81 1850 5.81 1851 5.81 1852 5.81 1853 5.81 1854 5.81 1855 5.81 1856 5.81 1857 5.81 1858 5.81 1859 5.81 1860 5.81 1861 5.81 1862 5.81 1863 5.81 1864 5.81 1865 5.81 1866 5.81 1867 5.81 1868 5.81 1869 5.81 1870 5.81 1871 5.81 1872 5.81 1873 5.81 1874 5.81 1875 5.81 1876 5.81 1877 5.81 1878 5.81 1879 5.81 1880 5.81 1881 5.81 1882 5.81 1883 5.81 1884 5.81 1885 5.81 1886 5.81 1887 5.81 1888 5.81 1889 5.81 1890 5.81 1891 5.81 1892 5.81 1893 5.81 1894 5.81 1895 5.81 1896 5.81 1897 5.81 1898 5.81 1899 5.81 1900 5.81 1901 5.81 1902 5.81 1903 5.81 1904 5.81 1905 5.81 1906 5.81 1907 5.81 1908 5.81 1909 5.81 1910 5.81 1911 5.81 1912 5.81 1913 5.81 1914 5.81 1915 5.81 1916 5.81 1917 5.81 1918 5.81 1919 5.81 1920 5.81 1921 5.81 1922 5.81 1923 5.81 1924 5.81 1925 5.81 1926 5.785 1927 5.76 1928 5.735 1929 5.71 1930 5.685 1931 5.66 1932 5.635 1933 5.61 1934 5.585 1935 5.56 1936 5.535 1937 5.51 1938 5.484 1939 5.459 1940 5.434 1941 5.409 1942 5.384 1943 5.359 1944 5.334 1945 5.309 1946 5.284 1947 5.259 1948 5.234 1949 5.209 1950 5.184 1951 5.358 1952 5.686 1953 5.974 1954 6.221 1955 6.428 1956 6.59 1957 6.709 1958 6.778 1959 6.792 1960 6.743 1961 6.627 1962 6.442 1963 6.196 1964 5.906 1965 5.597 1966 5.3 1967 5.04 1968 4.835 1969 4.69 1970 4.604 1971 4.561 1972 4.537 1973 4.512 1974 4.479 1975 4.436 1976 4.385 1977 4.337 1978 4.299 1979 4.269 1980 4.251 1981 4.244 1982 4.243 1983 4.245 1984 4.243 1985 4.231 1986 4.2 1987 4.146 1988 4.068 1989 3.966 1990 3.842 1991 3.701 1992 3.551 1993 3.401 1994 3.254 1995 3.116 1996 2.988 1997 2.87 1998 2.762 1999 2.666 2000 2.582 2001 2.512 2002 2.455 2003 2.409 2004 2.373 2005 2.344 2006 2.321 2007 2.301 2008 2.282 2009 2.262 2010 2.24 2011 2.217 2012 2.194 2013 2.17 2014 2.147 2015 2.125 2016 2.103 2017 2.082 2018 2.062 2019 2.043 2020 2.025 2021 2.008 2022 1.991 2023 1.975 2024 1.96 2030 1.884 2040 1.813 2050 1.789 2070 1.798 2080 1.814 2099 1.843