Year Total
1800 4.78
1801 4.777
1802 4.775
1803 4.772
1804 4.769
1805 4.767
1806 4.764
1807 4.761
1808 4.759
1809 4.756
1810 4.753
1811 4.751
1812 4.748
1813 4.745
1814 4.743
1815 4.74
1816 4.737
1817 4.735
1818 4.732
1819 4.729
1820 4.727
1821 4.724
1822 4.721
1823 4.719
1824 4.716
1825 4.713
1826 4.711
1827 4.708
1828 4.705
1829 4.703
1830 4.7
1831 4.694
1832 4.687
1833 4.681
1834 4.674
1835 4.668
1836 4.661
1837 4.655
1838 4.648
1839 4.642
1840 4.635
1841 4.629
1842 4.622
1843 4.616
1844 4.609
1845 4.603
1846 4.597
1847 4.59
1848 4.584
1849 4.577
1850 4.571
1851 4.7
1852 4.336
1853 4.243
1854 4.369
1855 4.105
1856 4.328
1857 4.328
1858 4.495
1859 4.762
1860 4.533
1861 4.465
1862 4.349
1863 4.556
1864 4.433
1865 4.36
1866 4.253
1867 4.316
1868 4.254
1869 4.326
1870 4.426
1871 4.248
1872 4.273
1873 4.358
1874 4.445
1875 4.155
1876 4.623
1877 4.484
1878 4.327
1879 4.445
1880 4.261
1881 4.287
1882 4.176
1883 4.025
1884 4.317
1885 4.005
1886 4.118
1887 3.992
1888 3.886
1889 3.892
1890 3.776
1891 3.94
1892 3.76
1893 3.91
1894 3.817
1895 3.859
1896 3.839
1897 3.971
1898 3.888
1899 4.07
1900 4.043
1901 4.221
1902 4.181
1903 4.141
1904 4.1
1905 4.06
1906 4.032
1907 4.004
1908 3.976
1909 3.948
1910 3.92
1911 3.746
1912 3.572
1913 3.398
1914 3.224
1915 3.05
1916 3.006
1917 2.962
1918 2.918
1919 2.874
1920 2.83
1921 2.778
1922 2.726
1923 2.674
1924 2.622
1925 2.57
1926 2.598
1927 2.626
1928 2.654
1929 2.682
1930 2.71
1931 2.538
1932 2.366
1933 2.194
1934 2.022
1935 1.85
1936 1.824
1937 1.798
1938 1.772
1939 1.746
1940 1.72
1941 1.728
1942 1.736
1943 1.744
1944 1.752
1945 1.76
1946 2.325
1947 2.89
1948 2.549
1949 2.209
1950 1.868
1951 1.896
1952 1.953
1953 2.008
1954 2.063
1955 2.117
1956 2.17
1957 2.221
1958 2.269
1959 2.312
1960 2.349
1961 2.375
1962 2.39
1963 2.39
1964 2.374
1965 2.342
1966 2.291
1967 2.223
1968 2.143
1969 2.054
1970 1.96
1971 1.867
1972 1.778
1973 1.697
1974 1.627
1975 1.57
1976 1.528
1977 1.497
1978 1.476
1979 1.463
1980 1.456
1981 1.452
1982 1.45
1983 1.448
1984 1.448
1985 1.45
1986 1.458
1987 1.473
1988 1.496
1989 1.526
1990 1.562
1991 1.6
1992 1.637
1993 1.669
1994 1.694
1995 1.711
1996 1.72
1997 1.721
1998 1.716
1999 1.707
2000 1.695
2001 1.68
2002 1.665
2003 1.65
2004 1.638
2005 1.629
2006 1.624
2007 1.623
2008 1.626
2009 1.631
2010 1.64
2011 1.65
2012 1.661
2013 1.671
2014 1.681
2015 1.69
2016 1.698
2017 1.705
2018 1.712
2019 1.718
2020 1.724
2021 1.73
2022 1.736
2023 1.742
2024 1.747
2030 1.775
2040 1.809
2050 1.831
2070 1.859
2080 1.868
2099 1.876