Year Total
1800 5.9
1801 5.9
1802 5.9
1803 5.9
1804 5.9
1805 5.9
1806 5.9
1807 5.9
1808 5.9
1809 5.9
1810 5.9
1811 5.9
1812 5.9
1813 5.9
1814 5.9
1815 5.9
1816 5.9
1817 5.9
1818 5.9
1819 5.9
1820 5.9
1821 5.9
1822 5.9
1823 5.9
1824 5.9
1825 5.9
1826 5.9
1827 5.9
1828 5.9
1829 5.9
1830 5.9
1831 5.9
1832 5.9
1833 5.9
1834 5.9
1835 5.9
1836 5.9
1837 5.9
1838 5.9
1839 5.9
1840 5.9
1841 5.9
1842 5.9
1843 5.9
1844 5.9
1845 5.9
1846 5.9
1847 5.9
1848 5.9
1849 5.9
1850 5.9
1851 5.9
1852 5.9
1853 5.9
1854 5.9
1855 5.9
1856 5.9
1857 5.9
1858 5.9
1859 5.9
1860 5.9
1861 5.9
1862 5.9
1863 5.9
1864 5.9
1865 5.9
1866 5.9
1867 5.9
1868 5.9
1869 5.9
1870 5.9
1871 5.9
1872 5.9
1873 5.9
1874 5.9
1875 5.9
1876 5.9
1877 5.9
1878 5.9
1879 5.9
1880 5.9
1881 5.9
1882 5.9
1883 5.9
1884 5.9
1885 5.9
1886 5.9
1887 5.9
1888 5.9
1889 5.9
1890 5.9
1891 5.9
1892 5.9
1893 5.9
1894 5.9
1895 5.9
1896 5.9
1897 5.9
1898 5.9
1899 5.9
1900 5.9
1901 5.9
1902 5.9
1903 5.9
1904 5.9
1905 5.9
1906 5.9
1907 5.9
1908 5.9
1909 5.9
1910 5.9
1911 5.9
1912 5.9
1913 5.9
1914 5.9
1915 5.9
1916 5.9
1917 5.9
1918 5.9
1919 5.9
1920 5.9
1921 5.9
1922 5.9
1923 5.9
1924 5.9
1925 5.9
1926 5.823
1927 5.746
1928 5.669
1929 5.592
1930 5.516
1931 5.439
1932 5.362
1933 5.285
1934 5.208
1935 5.131
1936 5.054
1937 4.977
1938 4.901
1939 4.824
1940 4.747
1941 4.67
1942 4.593
1943 4.516
1944 4.439
1945 4.362
1946 4.286
1947 4.209
1948 4.132
1949 4.055
1950 3.978
1951 3.991
1952 4.021
1953 4.062
1954 4.115
1955 4.178
1956 4.248
1957 4.323
1958 4.397
1959 4.458
1960 4.495
1961 4.496
1962 4.45
1963 4.356
1964 4.22
1965 4.057
1966 3.893
1967 3.75
1968 3.641
1969 3.571
1970 3.531
1971 3.504
1972 3.469
1973 3.411
1974 3.33
1975 3.234
1976 3.139
1977 3.062
1978 3.012
1979 2.99
1980 2.989
1981 2.994
1982 2.989
1983 2.965
1984 2.919
1985 2.857
1986 2.789
1987 2.728
1988 2.683
1989 2.654
1990 2.639
1991 2.631
1992 2.621
1993 2.601
1994 2.566
1995 2.514
1996 2.443
1997 2.357
1998 2.263
1999 2.165
2000 2.071
2001 1.989
2002 1.924
2003 1.88
2004 1.857
2005 1.853
2006 1.862
2007 1.876
2008 1.889
2009 1.898
2010 1.901
2011 1.898
2012 1.893
2013 1.888
2014 1.883
2015 1.878
2016 1.874
2017 1.871
2018 1.867
2019 1.864
2020 1.861
2021 1.858
2022 1.855
2023 1.852
2024 1.85
2030 1.838
2040 1.826
2050 1.824
2070 1.838
2080 1.846
2099 1.863