Year Total
1800 5.4
1801 5.395
1802 5.39
1803 5.385
1804 5.38
1805 5.375
1806 5.371
1807 5.366
1808 5.361
1809 5.356
1810 5.351
1811 5.346
1812 5.341
1813 5.336
1814 5.331
1815 5.327
1816 5.322
1817 5.317
1818 5.335
1819 5.353
1820 5.371
1821 5.349
1822 5.327
1823 5.306
1824 5.284
1825 5.263
1826 5.166
1827 5.069
1828 4.972
1829 4.875
1830 4.778
1831 4.803
1832 4.827
1833 4.851
1834 4.875
1835 4.899
1836 4.899
1837 4.899
1838 4.899
1839 4.899
1840 4.899
1841 4.924
1842 4.948
1843 4.972
1844 4.996
1845 5.021
1846 5.018
1847 5.015
1848 5.013
1849 5.01
1850 5.007
1851 4.873
1852 4.738
1853 4.603
1854 4.469
1855 4.334
1856 4.447
1857 4.56
1858 4.673
1859 4.786
1860 4.899
1861 4.932
1862 4.964
1863 4.996
1864 5.029
1865 5.061
1866 5.085
1867 5.109
1868 5.134
1869 5.158
1870 5.182
1871 5.239
1872 5.295
1873 5.352
1874 5.408
1875 5.465
1876 5.384
1877 5.303
1878 5.222
1879 5.142
1880 5.061
1881 5.137
1882 5.214
1883 5.29
1884 5.276
1885 5.262
1886 5.248
1887 5.234
1888 5.22
1889 5.208
1890 5.196
1891 5.184
1892 5.172
1893 5.16
1894 5.136
1895 5.112
1896 5.088
1897 5.064
1898 5.04
1899 4.986
1900 4.932
1901 4.878
1902 4.824
1903 4.77
1904 4.684
1905 4.598
1906 4.512
1907 4.426
1908 4.34
1909 4.176
1910 4.012
1911 3.848
1912 3.684
1913 3.52
1914 3.268
1915 3.016
1916 2.764
1917 2.512
1918 2.26
1919 2.332
1920 2.404
1921 2.476
1922 2.548
1923 2.62
1924 2.415
1925 2.21
1926 2.1
1927 1.98
1928 1.99
1929 1.93
1930 1.88
1931 1.71
1932 1.62
1933 1.58
1934 1.93
1935 2.03
1936 2.07
1937 2.09
1938 2.25
1939 2.39
1940 2.4
1941 2.25
1942 1.83
1943 2
1944 1.89
1945 1.53
1946 2
1947 2.03
1948 2.09
1949 2.15
1950 2.07
1951 2.083
1952 2.111
1953 2.141
1954 2.174
1955 2.209
1956 2.247
1957 2.286
1958 2.327
1959 2.368
1960 2.407
1961 2.442
1962 2.471
1963 2.489
1964 2.494
1965 2.479
1966 2.438
1967 2.37
1968 2.278
1969 2.165
1970 2.042
1971 1.917
1972 1.8
1973 1.7
1974 1.62
1975 1.563
1976 1.527
1977 1.504
1978 1.489
1979 1.479
1980 1.472
1981 1.467
1982 1.463
1983 1.46
1984 1.457
1985 1.452
1986 1.441
1987 1.426
1988 1.406
1989 1.383
1990 1.359
1991 1.337
1992 1.321
1993 1.311
1994 1.309
1995 1.313
1996 1.322
1997 1.331
1998 1.34
1999 1.347
2000 1.35
2001 1.352
2002 1.352
2003 1.351
2004 1.352
2005 1.353
2006 1.356
2007 1.361
2008 1.368
2009 1.376
2010 1.386
2011 1.397
2012 1.408
2013 1.419
2014 1.429
2015 1.439
2016 1.449
2017 1.458
2018 1.466
2019 1.475
2020 1.483
2021 1.491
2022 1.498
2023 1.506
2024 1.513
2030 1.553
2040 1.607
2050 1.651
2070 1.711
2080 1.734
2099 1.766