Year Total
1800 6.6
1801 6.6
1802 6.6
1803 6.6
1804 6.6
1805 6.6
1806 6.6
1807 6.6
1808 6.6
1809 6.6
1810 6.6
1811 6.6
1812 6.6
1813 6.6
1814 6.6
1815 6.6
1816 6.6
1817 6.6
1818 6.6
1819 6.6
1820 6.6
1821 6.6
1822 6.6
1823 6.6
1824 6.6
1825 6.6
1826 6.6
1827 6.6
1828 6.6
1829 6.6
1830 6.6
1831 6.6
1832 6.6
1833 6.6
1834 6.6
1835 6.6
1836 6.6
1837 6.6
1838 6.6
1839 6.6
1840 6.6
1841 6.6
1842 6.6
1843 6.6
1844 6.6
1845 6.6
1846 6.6
1847 6.6
1848 6.6
1849 6.6
1850 6.6
1851 6.6
1852 6.6
1853 6.6
1854 6.6
1855 6.6
1856 6.6
1857 6.6
1858 6.6
1859 6.6
1860 6.6
1861 6.6
1862 6.6
1863 6.6
1864 6.6
1865 6.6
1866 6.6
1867 6.6
1868 6.6
1869 6.6
1870 6.6
1871 6.6
1872 6.6
1873 6.6
1874 6.6
1875 6.6
1876 6.6
1877 6.6
1878 6.6
1879 6.6
1880 6.6
1881 6.6
1882 6.6
1883 6.6
1884 6.6
1885 6.6
1886 6.6
1887 6.6
1888 6.6
1889 6.6
1890 6.6
1891 6.6
1892 6.6
1893 6.6
1894 6.6
1895 6.6
1896 6.6
1897 6.6
1898 6.6
1899 6.6
1900 6.6
1901 6.6
1902 6.6
1903 6.6
1904 6.6
1905 6.6
1906 6.6
1907 6.6
1908 6.6
1909 6.6
1910 6.6
1911 6.6
1912 6.6
1913 6.6
1914 6.6
1915 6.6
1916 6.6
1917 6.6
1918 6.6
1919 6.6
1920 6.6
1921 6.6
1922 6.6
1923 6.6
1924 6.6
1925 6.6
1926 6.643
1927 6.687
1928 6.73
1929 6.773
1930 6.817
1931 6.86
1932 6.903
1933 6.947
1934 6.99
1935 7.033
1936 7.077
1937 7.12
1938 7.163
1939 7.206
1940 7.25
1941 7.293
1942 7.336
1943 7.38
1944 7.423
1945 7.466
1946 7.51
1947 7.553
1948 7.596
1949 7.64
1950 7.683
1951 7.663
1952 7.623
1953 7.581
1954 7.536
1955 7.489
1956 7.439
1957 7.386
1958 7.329
1959 7.267
1960 7.197
1961 7.12
1962 7.033
1963 6.938
1964 6.836
1965 6.73
1966 6.626
1967 6.526
1968 6.433
1969 6.348
1970 6.272
1971 6.202
1972 6.134
1973 6.067
1974 5.999
1975 5.929
1976 5.858
1977 5.787
1978 5.716
1979 5.645
1980 5.575
1981 5.503
1982 5.43
1983 5.356
1984 5.282
1985 5.209
1986 5.141
1987 5.078
1988 5.022
1989 4.971
1990 4.927
1991 4.887
1992 4.85
1993 4.814
1994 4.775
1995 4.73
1996 4.677
1997 4.614
1998 4.542
1999 4.459
2000 4.368
2001 4.268
2002 4.162
2003 4.056
2004 3.95
2005 3.851
2006 3.76
2007 3.679
2008 3.608
2009 3.549
2010 3.499
2011 3.456
2012 3.419
2013 3.382
2014 3.346
2015 3.309
2016 3.271
2017 3.233
2018 3.196
2019 3.16
2020 3.125
2021 3.092
2022 3.059
2023 3.027
2024 2.997
2030 2.827
2040 2.59
2050 2.394
2070 2.098
2080 2.006
2099 1.909