Year Total
1800 4.85
1801 4.846
1802 4.841
1803 4.837
1804 4.833
1805 4.828
1806 4.824
1807 4.819
1808 4.815
1809 4.811
1810 4.806
1811 4.802
1812 4.798
1813 4.793
1814 4.789
1815 4.785
1816 4.78
1817 4.776
1818 4.771
1819 4.767
1820 4.763
1821 4.758
1822 4.754
1823 4.75
1824 4.745
1825 4.741
1826 4.736
1827 4.732
1828 4.728
1829 4.723
1830 4.719
1831 4.769
1832 4.818
1833 4.868
1834 4.918
1835 4.967
1836 4.973
1837 4.979
1838 4.985
1839 4.991
1840 4.997
1841 4.938
1842 4.88
1843 4.821
1844 4.763
1845 4.704
1846 4.64
1847 4.576
1848 4.512
1849 4.447
1850 4.383
1851 4.315
1852 4.248
1853 4.18
1854 4.246
1855 4.312
1856 4.378
1857 4.444
1858 4.51
1859 4.534
1860 4.558
1861 4.582
1862 4.606
1863 4.63
1864 4.656
1865 4.682
1866 4.708
1867 4.734
1868 4.76
1869 4.782
1870 4.804
1871 4.826
1872 4.848
1873 4.87
1874 4.852
1875 4.834
1876 4.816
1877 4.798
1878 4.78
1879 4.746
1880 4.712
1881 4.678
1882 4.644
1883 4.61
1884 4.548
1885 4.486
1886 4.424
1887 4.362
1888 4.3
1889 4.274
1890 4.248
1891 4.222
1892 4.196
1893 4.17
1894 4.132
1895 4.094
1896 4.056
1897 4.018
1898 3.98
1899 3.909
1900 3.839
1901 3.786
1902 3.733
1903 3.68
1904 3.627
1905 3.574
1906 3.521
1907 3.468
1908 3.415
1909 3.362
1910 3.309
1911 3.256
1912 3.203
1913 3.15
1914 3.097
1915 3.045
1916 2.992
1917 2.939
1918 2.886
1919 2.833
1920 2.78
1921 2.727
1922 2.674
1923 2.621
1924 2.568
1925 2.515
1926 2.462
1927 2.409
1928 2.356
1929 2.303
1930 2.25
1931 2.22
1932 2.19
1933 2.08
1934 2.04
1935 1.94
1936 1.95
1937 1.99
1938 2.11
1939 2.1
1940 1.84
1941 1.66
1942 1.81
1943 2.06
1944 2.12
1945 2.17
1946 2.53
1947 2.47
1948 2.45
1949 2.39
1950 2.295
1951 2.305
1952 2.327
1953 2.353
1954 2.383
1955 2.417
1956 2.454
1957 2.494
1958 2.534
1959 2.572
1960 2.604
1961 2.625
1962 2.633
1963 2.625
1964 2.599
1965 2.557
1966 2.501
1967 2.433
1968 2.36
1969 2.283
1970 2.206
1971 2.129
1972 2.052
1973 1.977
1974 1.905
1975 1.839
1976 1.781
1977 1.731
1978 1.689
1979 1.655
1980 1.629
1981 1.609
1982 1.594
1983 1.581
1984 1.571
1985 1.564
1986 1.56
1987 1.561
1988 1.565
1989 1.573
1990 1.582
1991 1.591
1992 1.599
1993 1.603
1994 1.605
1995 1.606
1996 1.605
1997 1.607
1998 1.612
1999 1.62
2000 1.633
2001 1.652
2002 1.675
2003 1.7
2004 1.727
2005 1.754
2006 1.78
2007 1.801
2008 1.819
2009 1.833
2010 1.842
2011 1.847
2012 1.851
2013 1.854
2014 1.857
2015 1.861
2016 1.865
2017 1.869
2018 1.873
2019 1.876
2020 1.88
2021 1.883
2022 1.886
2023 1.889
2024 1.892
2030 1.907
2040 1.925
2050 1.935
2070 1.948
2080 1.952
2099 1.956