Year Total
1800 5.18
1801 5.18
1802 5.18
1803 5.18
1804 5.18
1805 5.18
1806 5.18
1807 5.18
1808 5.18
1809 5.18
1810 5.18
1811 5.18
1812 5.18
1813 5.18
1814 5.18
1815 5.18
1816 5.18
1817 5.18
1818 5.18
1819 5.18
1820 5.18
1821 5.18
1822 5.18
1823 5.18
1824 5.18
1825 5.18
1826 5.18
1827 5.18
1828 5.18
1829 5.18
1830 5.18
1831 5.18
1832 5.18
1833 5.18
1834 5.18
1835 5.18
1836 5.18
1837 5.18
1838 5.18
1839 5.18
1840 5.18
1841 5.18
1842 5.18
1843 5.18
1844 5.18
1845 5.18
1846 5.18
1847 5.18
1848 5.18
1849 5.18
1850 5.18
1851 5.15
1852 5.12
1853 5.09
1854 5.06
1855 5.03
1856 5
1857 4.969
1858 4.939
1859 4.909
1860 4.879
1861 4.849
1862 5.106
1863 5.411
1864 5.032
1865 5.106
1866 5.02
1867 4.642
1868 5.093
1869 5.118
1870 5.142
1871 5.228
1872 4.959
1873 5.179
1874 5.228
1875 5.545
1876 5.606
1877 5.289
1878 5.228
1879 5.582
1880 5.228
1881 5.277
1882 5.399
1883 5.497
1884 5.594
1885 5.484
1886 5.57
1887 5.411
1888 5.362
1889 5.35
1890 4.935
1891 5.203
1892 4.959
1893 5.252
1894 5.081
1895 5.106
1896 4.971
1897 4.947
1898 4.617
1899 4.788
1900 5.282
1901 5.221
1902 5.159
1903 5.098
1904 5.037
1905 4.976
1906 4.914
1907 4.853
1908 4.792
1909 4.73
1910 4.669
1911 4.587
1912 4.504
1913 4.421
1914 4.339
1915 4.256
1916 4.174
1917 4.091
1918 4.009
1919 3.926
1920 3.844
1921 3.81
1922 3.6
1923 3.39
1924 3.18
1925 3.36
1926 3.24
1927 3.05
1928 3.08
1929 2.92
1930 2.84
1931 2.84
1932 2.78
1933 2.72
1934 2.57
1935 2.55
1936 2.48
1937 2.42
1938 2.46
1939 2.5
1940 2.485
1941 2.515
1942 2.545
1943 2.576
1944 2.606
1945 2.636
1946 2.666
1947 2.696
1948 2.727
1949 2.757
1950 2.787
1951 2.767
1952 2.722
1953 2.666
1954 2.599
1955 2.521
1956 2.434
1957 2.34
1958 2.24
1959 2.142
1960 2.051
1961 1.974
1962 1.917
1963 1.885
1964 1.876
1965 1.888
1966 1.915
1967 1.948
1968 1.98
1969 2.008
1970 2.03
1971 2.048
1972 2.067
1973 2.088
1974 2.108
1975 2.122
1976 2.124
1977 2.11
1978 2.08
1979 2.034
1980 1.981
1981 1.927
1982 1.881
1983 1.849
1984 1.831
1985 1.827
1986 1.833
1987 1.841
1988 1.846
1989 1.842
1990 1.826
1991 1.795
1992 1.749
1993 1.692
1994 1.627
1995 1.557
1996 1.488
1997 1.425
1998 1.373
1999 1.333
2000 1.307
2001 1.293
2002 1.288
2003 1.288
2004 1.292
2005 1.299
2006 1.308
2007 1.32
2008 1.333
2009 1.349
2010 1.364
2011 1.38
2012 1.396
2013 1.411
2014 1.426
2015 1.44
2016 1.453
2017 1.465
2018 1.477
2019 1.489
2020 1.5
2021 1.512
2022 1.522
2023 1.533
2024 1.543
2030 1.599
2040 1.671
2050 1.725
2070 1.795
2080 1.818
2099 1.847