Year Total
1800 4.5
1801 4.5
1802 4.5
1803 4.5
1804 4.5
1805 4.5
1806 4.5
1807 4.5
1808 4.5
1809 4.5
1810 4.5
1811 4.5
1812 4.5
1813 4.5
1814 4.5
1815 4.5
1816 4.5
1817 4.5
1818 4.5
1819 4.5
1820 4.5
1821 4.5
1822 4.5
1823 4.5
1824 4.5
1825 4.5
1826 4.5
1827 4.5
1828 4.5
1829 4.5
1830 4.5
1831 4.5
1832 4.5
1833 4.5
1834 4.5
1835 4.5
1836 4.5
1837 4.5
1838 4.5
1839 4.5
1840 4.5
1841 4.5
1842 4.5
1843 4.5
1844 4.5
1845 4.5
1846 4.5
1847 4.5
1848 4.5
1849 4.5
1850 4.5
1851 4.471
1852 4.442
1853 4.413
1854 4.384
1855 4.355
1856 4.325
1857 4.296
1858 4.267
1859 4.238
1860 4.209
1861 4.18
1862 4.151
1863 4.122
1864 4.093
1865 4.103
1866 4.114
1867 4.125
1868 4.135
1869 4.146
1870 4.157
1871 4.167
1872 4.178
1873 4.189
1874 4.199
1875 4.21
1876 4.221
1877 4.231
1878 4.242
1879 4.23
1880 4.218
1881 4.206
1882 4.195
1883 4.183
1884 4.171
1885 4.159
1886 4.147
1887 4.381
1888 4.303
1889 4.381
1890 4.238
1891 4.16
1892 4.056
1893 4.147
1894 3.861
1895 3.9
1896 3.9
1897 3.952
1898 3.926
1899 3.887
1900 3.965
1901 4.069
1902 4.16
1903 4.29
1904 4.108
1905 4.134
1906 4.173
1907 3.991
1908 3.939
1909 3.887
1910 4.121
1911 5.018
1912 4.537
1913 4.225
1914 4.095
1915 4.238
1916 4.173
1917 4.082
1918 3.861
1919 3.588
1920 4.368
1921 4.212
1922 4.303
1923 4.316
1924 4.264
1925 4.238
1926 4.355
1927 4.03
1928 4.147
1929 3.887
1930 3.861
1931 3.861
1932 3.887
1933 3.88
1934 3.737
1935 3.593
1936 3.45
1937 3.393
1938 3.335
1939 3.277
1940 3.22
1941 3.12
1942 3.14
1943 3.27
1944 3.28
1945 3.39
1946 3.29
1947 3.14
1948 3.42
1949 3.23
1950 3.104
1951 3.101
1952 3.097
1953 3.096
1954 3.098
1955 3.103
1956 3.111
1957 3.122
1958 3.134
1959 3.148
1960 3.162
1961 3.175
1962 3.185
1963 3.19
1964 3.189
1965 3.18
1966 3.161
1967 3.132
1968 3.093
1969 3.047
1970 2.994
1971 2.938
1972 2.882
1973 2.825
1974 2.769
1975 2.711
1976 2.646
1977 2.571
1978 2.485
1979 2.389
1980 2.286
1981 2.177
1982 2.068
1983 1.964
1984 1.868
1985 1.782
1986 1.71
1987 1.65
1988 1.601
1989 1.563
1990 1.535
1991 1.515
1992 1.502
1993 1.494
1994 1.488
1995 1.483
1996 1.479
1997 1.477
1998 1.474
1999 1.472
2000 1.468
2001 1.461
2002 1.452
2003 1.44
2004 1.425
2005 1.409
2006 1.391
2007 1.374
2008 1.358
2009 1.344
2010 1.333
2011 1.325
2012 1.319
2013 1.315
2014 1.313
2015 1.314
2016 1.317
2017 1.322
2018 1.329
2019 1.338
2020 1.348
2021 1.36
2022 1.371
2023 1.383
2024 1.395
2030 1.461
2040 1.556
2050 1.636
2070 1.743
2080 1.779
2099 1.823