Year Total
1800 6.34
1801 6.34
1802 6.34
1803 6.34
1804 6.34
1805 6.34
1806 6.34
1807 6.34
1808 6.34
1809 6.34
1810 6.34
1811 6.34
1812 6.34
1813 6.34
1814 6.34
1815 6.34
1816 6.34
1817 6.34
1818 6.34
1819 6.34
1820 6.34
1821 6.34
1822 6.34
1823 6.34
1824 6.34
1825 6.34
1826 6.34
1827 6.34
1828 6.34
1829 6.34
1830 6.34
1831 6.34
1832 6.34
1833 6.34
1834 6.34
1835 6.34
1836 6.34
1837 6.34
1838 6.34
1839 6.34
1840 6.34
1841 6.34
1842 6.34
1843 6.34
1844 6.34
1845 6.34
1846 6.34
1847 6.34
1848 6.34
1849 6.34
1850 6.34
1851 6.34
1852 6.34
1853 6.34
1854 6.34
1855 6.34
1856 6.34
1857 6.34
1858 6.34
1859 6.34
1860 6.34
1861 6.34
1862 6.34
1863 6.34
1864 6.34
1865 6.34
1866 6.34
1867 6.34
1868 6.34
1869 6.34
1870 6.34
1871 6.34
1872 6.34
1873 6.34
1874 6.34
1875 6.34
1876 6.34
1877 6.34
1878 6.34
1879 6.34
1880 6.34
1881 6.34
1882 6.34
1883 6.34
1884 6.34
1885 6.34
1886 6.34
1887 6.34
1888 6.34
1889 6.34
1890 6.34
1891 6.34
1892 6.34
1893 6.34
1894 6.34
1895 6.34
1896 6.34
1897 6.34
1898 6.34
1899 6.34
1900 6.34
1901 6.34
1902 6.34
1903 6.34
1904 6.34
1905 6.34
1906 6.34
1907 6.34
1908 6.34
1909 6.34
1910 6.34
1911 6.34
1912 6.34
1913 6.34
1914 6.34
1915 6.34
1916 6.34
1917 6.34
1918 6.34
1919 6.34
1920 6.34
1921 6.34
1922 6.34
1923 6.34
1924 6.34
1925 6.34
1926 6.34
1927 6.34
1928 6.339
1929 6.339
1930 6.339
1931 6.339
1932 6.339
1933 6.338
1934 6.338
1935 6.338
1936 6.338
1937 6.338
1938 6.337
1939 6.337
1940 6.337
1941 6.337
1942 6.337
1943 6.336
1944 6.336
1945 6.336
1946 6.336
1947 6.336
1948 6.335
1949 6.335
1950 6.335
1951 6.332
1952 6.328
1953 6.331
1954 6.34
1955 6.355
1956 6.377
1957 6.404
1958 6.438
1959 6.477
1960 6.521
1961 6.57
1962 6.622
1963 6.677
1964 6.734
1965 6.792
1966 6.851
1967 6.911
1968 6.971
1969 7.029
1970 7.084
1971 7.136
1972 7.182
1973 7.222
1974 7.254
1975 7.275
1976 7.286
1977 7.284
1978 7.27
1979 7.244
1980 7.207
1981 7.158
1982 7.099
1983 7.032
1984 6.957
1985 6.874
1986 6.781
1987 6.679
1988 6.569
1989 6.452
1990 6.331
1991 6.206
1992 6.081
1993 5.957
1994 5.837
1995 5.725
1996 5.62
1997 5.524
1998 5.437
1999 5.359
2000 5.288
2001 5.224
2002 5.166
2003 5.111
2004 5.059
2005 5.009
2006 4.962
2007 4.918
2008 4.876
2009 4.835
2010 4.792
2011 4.746
2012 4.695
2013 4.639
2014 4.576
2015 4.509
2016 4.439
2017 4.368
2018 4.298
2019 4.23
2020 4.166
2021 4.104
2022 4.045
2023 3.987
2024 3.931
2030 3.621
2040 3.204
2050 2.89
2070 2.432
2080 2.256
2099 2.03