Year Total
1800 4.44
1801 4.44
1802 4.44
1803 4.44
1804 4.44
1805 4.44
1806 4.44
1807 4.44
1808 4.44
1809 4.44
1810 4.44
1811 4.44
1812 4.44
1813 4.44
1814 4.44
1815 4.448
1816 4.455
1817 4.463
1818 4.47
1819 4.478
1820 4.485
1821 4.493
1822 4.5
1823 4.508
1824 4.515
1825 4.523
1826 4.53
1827 4.538
1828 4.545
1829 4.553
1830 4.56
1831 4.568
1832 4.575
1833 4.583
1834 4.59
1835 4.598
1836 4.605
1837 4.613
1838 4.62
1839 4.628
1840 4.635
1841 4.643
1842 4.65
1843 4.658
1844 4.665
1845 4.673
1846 4.68
1847 4.688
1848 4.695
1849 4.703
1850 4.71
1851 4.718
1852 4.725
1853 4.733
1854 4.74
1855 4.748
1856 4.755
1857 4.763
1858 4.77
1859 4.778
1860 4.785
1861 4.793
1862 4.8
1863 4.808
1864 4.815
1865 4.823
1866 4.83
1867 4.838
1868 4.845
1869 4.853
1870 4.86
1871 4.868
1872 4.875
1873 4.883
1874 4.89
1875 4.898
1876 4.905
1877 4.913
1878 4.92
1879 4.928
1880 4.935
1881 4.943
1882 4.95
1883 4.958
1884 4.891
1885 4.824
1886 4.717
1887 4.61
1888 4.502
1889 4.395
1890 4.288
1891 4.358
1892 4.427
1893 4.497
1894 4.567
1895 4.636
1896 4.69
1897 4.744
1898 4.797
1899 4.851
1900 4.904
1901 4.91
1902 4.915
1903 4.92
1904 4.926
1905 4.931
1906 4.811
1907 4.69
1908 4.569
1909 4.449
1910 4.328
1911 4.33
1912 4.333
1913 4.335
1914 4.337
1915 4.339
1916 4.342
1917 4.265
1918 4.188
1919 4.11
1920 4.033
1921 4.114
1922 4.194
1923 4.275
1924 4.355
1925 4.435
1926 4.357
1927 4.278
1928 4.2
1929 4.121
1930 4.043
1931 3.964
1932 3.886
1933 4.06
1934 4.234
1935 4.409
1936 4.308
1937 4.208
1938 4.355
1939 4.502
1940 4.65
1941 4.778
1942 4.907
1943 5.036
1944 5.164
1945 5.293
1946 5.29
1947 5.286
1948 5.283
1949 5.279
1950 5.276
1951 5.282
1952 5.294
1953 5.306
1954 5.318
1955 5.33
1956 5.339
1957 5.344
1958 5.338
1959 5.315
1960 5.264
1961 5.177
1962 5.047
1963 4.873
1964 4.664
1965 4.433
1966 4.2
1967 3.985
1968 3.802
1969 3.658
1970 3.554
1971 3.484
1972 3.432
1973 3.389
1974 3.349
1975 3.313
1976 3.287
1977 3.273
1978 3.271
1979 3.278
1980 3.284
1981 3.281
1982 3.261
1983 3.218
1984 3.151
1985 3.06
1986 2.949
1987 2.827
1988 2.7
1989 2.574
1990 2.453
1991 2.339
1992 2.231
1993 2.131
1994 2.04
1995 1.961
1996 1.896
1997 1.843
1998 1.801
1999 1.772
2000 1.753
2001 1.744
2002 1.744
2003 1.749
2004 1.758
2005 1.769
2006 1.779
2007 1.788
2008 1.796
2009 1.8
2010 1.802
2011 1.801
2012 1.799
2013 1.797
2014 1.795
2015 1.793
2016 1.792
2017 1.791
2018 1.79
2019 1.79
2020 1.79
2021 1.79
2022 1.79
2023 1.79
2024 1.79
2030 1.79
2040 1.8
2050 1.813
2070 1.839
2080 1.851
2099 1.872