Year Total
1800 6.89
1801 6.89
1802 6.89
1803 6.89
1804 6.89
1805 6.89
1806 6.89
1807 6.89
1808 6.89
1809 6.89
1810 6.89
1811 6.89
1812 6.89
1813 6.89
1814 6.89
1815 6.89
1816 6.89
1817 6.89
1818 6.89
1819 6.89
1820 6.89
1821 6.89
1822 6.89
1823 6.89
1824 6.89
1825 6.89
1826 6.89
1827 6.89
1828 6.89
1829 6.89
1830 6.89
1831 6.89
1832 6.89
1833 6.89
1834 6.89
1835 6.89
1836 6.89
1837 6.89
1838 6.89
1839 6.89
1840 6.89
1841 6.89
1842 6.89
1843 6.89
1844 6.89
1845 6.89
1846 6.89
1847 6.89
1848 6.89
1849 6.89
1850 6.89
1851 6.89
1852 6.89
1853 6.89
1854 6.89
1855 6.89
1856 6.89
1857 6.89
1858 6.89
1859 6.89
1860 6.89
1861 6.89
1862 6.89
1863 6.89
1864 6.89
1865 6.89
1866 6.89
1867 6.89
1868 6.89
1869 6.89
1870 6.89
1871 6.89
1872 6.89
1873 6.89
1874 6.89
1875 6.89
1876 6.89
1877 6.89
1878 6.89
1879 6.89
1880 6.89
1881 6.89
1882 6.89
1883 6.89
1884 6.89
1885 6.89
1886 6.89
1887 6.89
1888 6.89
1889 6.89
1890 6.89
1891 6.89
1892 6.89
1893 6.89
1894 6.89
1895 6.89
1896 6.89
1897 6.89
1898 6.89
1899 6.89
1900 6.89
1901 6.89
1902 6.89
1903 6.89
1904 6.89
1905 6.89
1906 6.89
1907 6.89
1908 6.89
1909 6.89
1910 6.89
1911 6.89
1912 6.89
1913 6.89
1914 6.89
1915 6.89
1916 6.89
1917 6.89
1918 6.89
1919 6.89
1920 6.89
1921 6.89
1922 6.89
1923 6.89
1924 6.89
1925 6.89
1926 6.906
1927 6.923
1928 6.939
1929 6.956
1930 6.972
1931 6.988
1932 7.005
1933 7.021
1934 7.038
1935 7.054
1936 7.07
1937 7.087
1938 7.103
1939 7.12
1940 7.136
1941 7.152
1942 7.169
1943 7.185
1944 7.202
1945 7.218
1946 7.234
1947 7.251
1948 7.267
1949 7.284
1950 7.3
1951 7.3
1952 7.3
1953 7.3
1954 7.3
1955 7.3
1956 7.3
1957 7.3
1958 7.3
1959 7.3
1960 7.3
1961 7.3
1962 7.3
1963 7.3
1964 7.3
1965 7.301
1966 7.304
1967 7.31
1968 7.316
1969 7.322
1970 7.325
1971 7.325
1972 7.318
1973 7.3
1974 7.269
1975 7.216
1976 7.129
1977 7.008
1978 6.857
1979 6.687
1980 6.514
1981 6.359
1982 6.24
1983 6.165
1984 6.135
1985 6.146
1986 6.182
1987 6.225
1988 6.256
1989 6.268
1990 6.258
1991 6.225
1992 6.179
1993 6.126
1994 6.066
1995 5.999
1996 5.924
1997 5.841
1998 5.749
1999 5.651
2000 5.548
2001 5.443
2002 5.337
2003 5.233
2004 5.133
2005 5.039
2006 4.952
2007 4.87
2008 4.794
2009 4.722
2010 4.654
2011 4.59
2012 4.528
2013 4.468
2014 4.409
2015 4.351
2016 4.293
2017 4.236
2018 4.18
2019 4.126
2020 4.072
2021 4.02
2022 3.969
2023 3.919
2024 3.871
2030 3.601
2040 3.233
2050 2.94
2070 2.505
2080 2.332
2099 2.091