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 5.44 1927 5.37 1928 5.3 1929 5.23 1930 5.16 1931 5.09 1932 5.021 1933 4.951 1934 4.881 1935 4.811 1936 4.741 1937 4.671 1938 4.601 1939 4.531 1940 4.461 1941 4.391 1942 4.321 1943 4.251 1944 4.182 1945 4.112 1946 4.042 1947 3.972 1948 3.902 1949 3.832 1950 3.762 1951 3.946 1952 4.286 1953 4.57 1954 4.797 1955 4.968 1956 5.08 1957 5.135 1958 5.132 1959 5.069 1960 4.945 1961 4.763 1962 4.525 1963 4.242 1964 3.926 1965 3.594 1966 3.261 1967 2.942 1968 2.647 1969 2.388 1970 2.166 1971 1.98 1972 1.821 1973 1.683 1974 1.568 1975 1.484 1976 1.44 1977 1.441 1978 1.485 1979 1.563 1980 1.665 1981 1.777 1982 1.882 1983 1.966 1984 2.021 1985 2.04 1986 2.019 1987 1.966 1988 1.891 1989 1.798 1990 1.694 1991 1.589 1992 1.487 1993 1.394 1994 1.312 1995 1.242 1996 1.179 1997 1.119 1998 1.057 1999 0.996 2000 0.939 2001 0.891 2002 0.856 2003 0.838 2004 0.836 2005 0.849 2006 0.874 2007 0.906 2008 0.939 2009 0.973 2010 1.003 2011 1.031 2012 1.058 2013 1.083 2014 1.108 2015 1.132 2016 1.155 2017 1.177 2018 1.199 2019 1.219 2020 1.239 2021 1.259 2022 1.278 2023 1.296 2024 1.314 2030 1.411 2040 1.537 2050 1.626 2070 1.738 2080 1.772 2099 1.817