Year Total 1800 5.49 1801 5.49 1802 5.49 1803 5.49 1804 5.49 1805 5.49 1806 5.49 1807 5.49 1808 5.49 1809 5.49 1810 5.49 1811 5.49 1812 5.49 1813 5.49 1814 5.49 1815 5.49 1816 5.49 1817 5.49 1818 5.49 1819 5.49 1820 5.49 1821 5.49 1822 5.49 1823 5.49 1824 5.49 1825 5.49 1826 5.49 1827 5.49 1828 5.49 1829 5.49 1830 5.49 1831 5.49 1832 5.49 1833 5.49 1834 5.49 1835 5.49 1836 5.49 1837 5.49 1838 5.49 1839 5.49 1840 5.49 1841 5.49 1842 5.49 1843 5.49 1844 5.49 1845 5.49 1846 5.49 1847 5.49 1848 5.49 1849 5.49 1850 5.49 1851 5.49 1852 5.49 1853 5.49 1854 5.49 1855 5.49 1856 5.49 1857 5.49 1858 5.49 1859 5.49 1860 5.49 1861 5.49 1862 5.49 1863 5.49 1864 5.49 1865 5.49 1866 5.49 1867 5.49 1868 5.49 1869 5.49 1870 5.49 1871 5.49 1872 5.49 1873 5.49 1874 5.49 1875 5.49 1876 5.49 1877 5.49 1878 5.49 1879 5.49 1880 5.49 1881 5.477 1882 5.464 1883 5.45 1884 5.437 1885 5.424 1886 5.411 1887 5.398 1888 5.384 1889 5.371 1890 5.358 1891 5.345 1892 5.332 1893 5.318 1894 5.305 1895 5.292 1896 5.279 1897 5.266 1898 5.252 1899 5.239 1900 5.226 1901 5.28 1902 5.333 1903 5.387 1904 5.44 1905 5.494 1906 5.363 1907 5.231 1908 5.1 1909 4.969 1910 4.837 1911 4.687 1912 4.537 1913 4.387 1914 4.237 1915 4.087 1916 4.194 1917 4.301 1918 4.409 1919 4.516 1920 4.623 1921 4.591 1922 4.559 1923 4.527 1924 4.494 1925 4.462 1926 4.486 1927 4.51 1928 4.535 1929 4.559 1930 4.583 1931 4.577 1932 4.572 1933 4.567 1934 4.561 1935 4.556 1936 4.516 1937 4.476 1938 4.435 1939 4.395 1940 4.355 1941 4.513 1942 4.671 1943 4.829 1944 4.987 1945 5.146 1946 5.132 1947 5.119 1948 4.844 1949 4.569 1950 4.211 1951 4.197 1952 4.163 1953 4.122 1954 4.071 1955 4.011 1956 3.941 1957 3.861 1958 3.767 1959 3.657 1960 3.527 1961 3.375 1962 3.2 1963 3.005 1964 2.798 1965 2.592 1966 2.401 1967 2.238 1968 2.11 1969 2.023 1970 1.975 1971 1.963 1972 1.975 1973 1.999 1974 2.028 1975 2.056 1976 2.077 1977 2.09 1978 2.097 1979 2.095 1980 2.087 1981 2.075 1982 2.064 1983 2.057 1984 2.054 1985 2.055 1986 2.059 1987 2.064 1988 2.065 1989 2.062 1990 2.054 1991 2.04 1992 2.022 1993 1.998 1994 1.968 1995 1.93 1996 1.881 1997 1.819 1998 1.748 1999 1.671 2000 1.593 2001 1.521 2002 1.461 2003 1.417 2004 1.388 2005 1.375 2006 1.373 2007 1.375 2008 1.377 2009 1.377 2010 1.373 2011 1.367 2012 1.361 2013 1.356 2014 1.354 2015 1.354 2016 1.358 2017 1.363 2018 1.371 2019 1.38 2020 1.39 2021 1.401 2022 1.412 2023 1.423 2024 1.434 2030 1.495 2040 1.583 2050 1.657 2070 1.754 2080 1.787 2099 1.829