Year Total
1800 7.8
1801 7.8
1802 7.8
1803 7.8
1804 7.8
1805 7.8
1806 7.8
1807 7.8
1808 7.8
1809 7.8
1810 7.8
1811 7.8
1812 7.8
1813 7.8
1814 7.8
1815 7.8
1816 7.8
1817 7.8
1818 7.8
1819 7.8
1820 7.8
1821 7.8
1822 7.8
1823 7.8
1824 7.8
1825 7.8
1826 7.8
1827 7.8
1828 7.8
1829 7.8
1830 7.8
1831 7.8
1832 7.8
1833 7.8
1834 7.8
1835 7.8
1836 7.8
1837 7.8
1838 7.8
1839 7.8
1840 7.8
1841 7.8
1842 7.8
1843 7.8
1844 7.8
1845 7.8
1846 7.8
1847 7.8
1848 7.8
1849 7.8
1850 7.8
1851 7.8
1852 7.8
1853 7.8
1854 7.8
1855 7.8
1856 7.8
1857 7.8
1858 7.8
1859 7.8
1860 7.8
1861 7.8
1862 7.8
1863 7.8
1864 7.8
1865 7.8
1866 7.8
1867 7.8
1868 7.8
1869 7.8
1870 7.8
1871 7.8
1872 7.8
1873 7.8
1874 7.8
1875 7.8
1876 7.8
1877 7.8
1878 7.8
1879 7.8
1880 7.8
1881 7.8
1882 7.8
1883 7.8
1884 7.8
1885 7.8
1886 7.8
1887 7.8
1888 7.8
1889 7.8
1890 7.8
1891 7.8
1892 7.8
1893 7.8
1894 7.8
1895 7.8
1896 7.8
1897 7.8
1898 7.8
1899 7.8
1900 7.8
1901 7.723
1902 7.647
1903 7.57
1904 7.493
1905 7.417
1906 7.34
1907 7.263
1908 7.187
1909 7.11
1910 7.033
1911 6.957
1912 6.88
1913 6.803
1914 6.727
1915 6.65
1916 6.573
1917 6.497
1918 6.42
1919 6.343
1920 6.267
1921 6.19
1922 6.113
1923 6.037
1924 5.96
1925 5.883
1926 5.807
1927 5.73
1928 5.653
1929 5.577
1930 5.5
1931 5.317
1932 5.134
1933 4.951
1934 4.769
1935 4.586
1936 4.403
1937 4.22
1938 4.037
1939 3.854
1940 3.672
1941 3.614
1942 3.557
1943 3.5
1944 3.443
1945 3.385
1946 3.328
1947 3.271
1948 3.214
1949 3.156
1950 3.099
1951 3.068
1952 3.011
1953 2.968
1954 2.939
1955 2.923
1956 2.919
1957 2.925
1958 2.938
1959 2.953
1960 2.964
1961 2.965
1962 2.95
1963 2.915
1964 2.864
1965 2.801
1966 2.737
1967 2.68
1968 2.637
1969 2.609
1970 2.595
1971 2.588
1972 2.579
1973 2.563
1974 2.537
1975 2.502
1976 2.461
1977 2.419
1978 2.379
1979 2.343
1980 2.315
1981 2.296
1982 2.284
1983 2.277
1984 2.275
1985 2.273
1986 2.269
1987 2.26
1988 2.243
1989 2.217
1990 2.18
1991 2.132
1992 2.076
1993 2.013
1994 1.946
1995 1.879
1996 1.812
1997 1.749
1998 1.692
1999 1.643
2000 1.609
2001 1.592
2002 1.593
2003 1.609
2004 1.639
2005 1.678
2006 1.719
2007 1.758
2008 1.788
2009 1.809
2010 1.82
2011 1.822
2012 1.82
2013 1.817
2014 1.815
2015 1.814
2016 1.814
2017 1.816
2018 1.817
2019 1.819
2020 1.82
2021 1.822
2022 1.823
2023 1.825
2024 1.826
2030 1.834
2040 1.845
2050 1.854
2070 1.871
2080 1.877
2099 1.89