Year Total
1800 6.5
1801 6.5
1802 6.5
1803 6.5
1804 6.5
1805 6.5
1806 6.5
1807 6.5
1808 6.5
1809 6.5
1810 6.5
1811 6.5
1812 6.5
1813 6.5
1814 6.5
1815 6.5
1816 6.5
1817 6.5
1818 6.5
1819 6.5
1820 6.5
1821 6.5
1822 6.5
1823 6.5
1824 6.5
1825 6.5
1826 6.5
1827 6.5
1828 6.5
1829 6.5
1830 6.5
1831 6.5
1832 6.5
1833 6.5
1834 6.5
1835 6.5
1836 6.5
1837 6.5
1838 6.5
1839 6.5
1840 6.5
1841 6.5
1842 6.5
1843 6.5
1844 6.5
1845 6.5
1846 6.5
1847 6.5
1848 6.5
1849 6.5
1850 6.5
1851 6.5
1852 6.5
1853 6.5
1854 6.5
1855 6.5
1856 6.5
1857 6.5
1858 6.5
1859 6.5
1860 6.5
1861 6.5
1862 6.5
1863 6.5
1864 6.5
1865 6.5
1866 6.5
1867 6.5
1868 6.5
1869 6.5
1870 6.5
1871 6.5
1872 6.5
1873 6.5
1874 6.5
1875 6.5
1876 6.5
1877 6.5
1878 6.5
1879 6.5
1880 6.5
1881 6.5
1882 6.5
1883 6.5
1884 6.5
1885 6.5
1886 6.5
1887 6.5
1888 6.5
1889 6.5
1890 6.5
1891 6.5
1892 6.5
1893 6.5
1894 6.5
1895 6.5
1896 6.5
1897 6.5
1898 6.5
1899 6.5
1900 6.5
1901 6.5
1902 6.5
1903 6.5
1904 6.5
1905 6.5
1906 6.5
1907 6.5
1908 6.5
1909 6.5
1910 6.5
1911 6.5
1912 6.5
1913 6.5
1914 6.5
1915 6.5
1916 6.5
1917 6.5
1918 6.5
1919 6.5
1920 6.5
1921 6.5
1922 6.5
1923 6.5
1924 6.5
1925 6.5
1926 6.5
1927 6.5
1928 6.5
1929 6.5
1930 6.5
1931 6.5
1932 6.5
1933 6.5
1934 6.5
1935 6.5
1936 6.5
1937 6.5
1938 6.5
1939 6.5
1940 6.5
1941 6.5
1942 6.5
1943 6.5
1944 6.5
1945 6.5
1946 6.5
1947 6.5
1948 6.5
1949 6.5
1950 6.5
1951 6.525
1952 6.578
1953 6.633
1954 6.692
1955 6.755
1956 6.819
1957 6.885
1958 6.951
1959 7.012
1960 7.065
1961 7.106
1962 7.131
1963 7.135
1964 7.119
1965 7.081
1966 7.024
1967 6.953
1968 6.871
1969 6.781
1970 6.687
1971 6.588
1972 6.485
1973 6.38
1974 6.273
1975 6.168
1976 6.067
1977 5.97
1978 5.876
1979 5.782
1980 5.682
1981 5.57
1982 5.439
1983 5.29
1984 5.123
1985 4.942
1986 4.754
1987 4.567
1988 4.387
1989 4.217
1990 4.058
1991 3.905
1992 3.755
1993 3.606
1994 3.457
1995 3.31
1996 3.167
1997 3.033
1998 2.909
1999 2.797
2000 2.698
2001 2.611
2002 2.535
2003 2.47
2004 2.418
2005 2.385
2006 2.377
2007 2.398
2008 2.443
2009 2.509
2010 2.583
2011 2.652
2012 2.706
2013 2.735
2014 2.737
2015 2.714
2016 2.67
2017 2.617
2018 2.565
2019 2.517
2020 2.476
2021 2.442
2022 2.411
2023 2.382
2024 2.354
2030 2.211
2040 2.041
2050 1.941
2070 1.867
2080 1.862
2099 1.869