Year Total 1800 5.51 1801 5.51 1802 5.51 1803 5.51 1804 5.51 1805 5.51 1806 5.51 1807 5.51 1808 5.51 1809 5.51 1810 5.51 1811 5.51 1812 5.51 1813 5.51 1814 5.51 1815 5.51 1816 5.51 1817 5.51 1818 5.51 1819 5.51 1820 5.51 1821 5.51 1822 5.51 1823 5.51 1824 5.51 1825 5.51 1826 5.51 1827 5.51 1828 5.51 1829 5.51 1830 5.51 1831 5.51 1832 5.51 1833 5.51 1834 5.51 1835 5.51 1836 5.51 1837 5.51 1838 5.51 1839 5.51 1840 5.51 1841 5.51 1842 5.51 1843 5.51 1844 5.51 1845 5.51 1846 5.51 1847 5.51 1848 5.51 1849 5.51 1850 5.51 1851 5.51 1852 5.51 1853 5.51 1854 5.51 1855 5.51 1856 5.51 1857 5.51 1858 5.51 1859 5.51 1860 5.51 1861 5.51 1862 5.51 1863 5.51 1864 5.51 1865 5.51 1866 5.51 1867 5.51 1868 5.51 1869 5.51 1870 5.51 1871 5.51 1872 5.51 1873 5.51 1874 5.51 1875 5.51 1876 5.51 1877 5.51 1878 5.51 1879 5.51 1880 5.51 1881 5.51 1882 5.51 1883 5.51 1884 5.51 1885 5.51 1886 5.51 1887 5.51 1888 5.51 1889 5.51 1890 5.51 1891 5.51 1892 5.51 1893 5.51 1894 5.51 1895 5.51 1896 5.51 1897 5.51 1898 5.51 1899 5.51 1900 5.51 1901 5.51 1902 5.51 1903 5.51 1904 5.51 1905 5.51 1906 5.51 1907 5.51 1908 5.51 1909 5.51 1910 5.51 1911 5.51 1912 5.51 1913 5.51 1914 5.51 1915 5.51 1916 5.51 1917 5.51 1918 5.51 1919 5.51 1920 5.51 1921 5.51 1922 5.51 1923 5.51 1924 5.51 1925 5.51 1926 5.51 1927 5.51 1928 5.51 1929 5.509 1930 5.509 1931 5.509 1932 5.509 1933 5.509 1934 5.509 1935 5.508 1936 5.508 1937 5.508 1938 5.508 1939 5.508 1940 5.508 1941 5.507 1942 5.507 1943 5.507 1944 5.507 1945 5.507 1946 5.507 1947 5.506 1948 5.506 1949 5.506 1950 5.506 1951 5.504 1952 5.502 1953 5.5 1954 5.498 1955 5.496 1956 5.495 1957 5.495 1958 5.495 1959 5.498 1960 5.505 1961 5.515 1962 5.529 1963 5.548 1964 5.57 1965 5.595 1966 5.619 1967 5.64 1968 5.658 1969 5.671 1970 5.678 1971 5.681 1972 5.68 1973 5.677 1974 5.675 1975 5.674 1976 5.676 1977 5.682 1978 5.693 1979 5.708 1980 5.728 1981 5.751 1982 5.776 1983 5.802 1984 5.826 1985 5.848 1986 5.866 1987 5.881 1988 5.891 1989 5.897 1990 5.9 1991 5.901 1992 5.902 1993 5.902 1994 5.901 1995 5.897 1996 5.888 1997 5.872 1998 5.847 1999 5.814 2000 5.773 2001 5.727 2002 5.678 2003 5.627 2004 5.574 2005 5.518 2006 5.457 2007 5.39 2008 5.314 2009 5.231 2010 5.14 2011 5.044 2012 4.945 2013 4.845 2014 4.745 2015 4.646 2016 4.549 2017 4.453 2018 4.357 2019 4.264 2020 4.172 2021 4.082 2022 3.994 2023 3.908 2024 3.823 2030 3.371 2040 2.819 2050 2.468 2070 2.076 2080 1.977 2099 1.888