Year	Total
1800	6
1801	6
1802	6
1803	6
1804	6
1805	6
1806	6
1807	6
1808	6
1809	6
1810	6
1811	6
1812	6
1813	6
1814	6
1815	6
1816	6
1817	6
1818	6
1819	6
1820	6
1821	6
1822	6
1823	6
1824	6
1825	6
1826	6
1827	6
1828	6
1829	6
1830	6
1831	6
1832	6
1833	6
1834	6
1835	6
1836	6
1837	6
1838	6
1839	6
1840	6
1841	6
1842	6
1843	6
1844	6
1845	6
1846	6
1847	6
1848	6
1849	6
1850	6
1851	6
1852	6
1853	6
1854	6
1855	6
1856	6
1857	6
1858	6
1859	6
1860	6
1861	6
1862	6
1863	6
1864	6
1865	6
1866	6
1867	6
1868	6
1869	6
1870	6
1871	6
1872	6
1873	6
1874	6
1875	6
1876	6
1877	6
1878	6
1879	6
1880	6
1881	6
1882	6
1883	6
1884	6
1885	6
1886	6
1887	6
1888	6
1889	6
1890	6
1891	6
1892	6
1893	6
1894	6
1895	6
1896	6
1897	6
1898	6
1899	6
1900	6
1901	5.996
1902	5.991
1903	5.987
1904	5.982
1905	5.978
1906	5.973
1907	5.969
1908	5.964
1909	5.96
1910	5.956
1911	5.951
1912	5.947
1913	5.942
1914	5.938
1915	5.933
1916	5.929
1917	5.924
1918	5.92
1919	5.93
1920	5.94
1921	5.95
1922	5.96
1923	5.97
1924	5.95
1925	5.93
1926	5.91
1927	5.89
1928	5.87
1929	5.9
1930	5.93
1931	5.96
1932	5.99
1933	6.02
1934	6.052
1935	6.084
1936	6.116
1937	6.148
1938	6.18
1939	6.16
1940	6.14
1941	6.12
1942	6.1
1943	6.08
1944	5.982
1945	5.884
1946	5.786
1947	5.688
1948	5.59
1949	4.806
1950	4.023
1951	4.326
1952	4.886
1953	5.353
1954	5.728
1955	6.01
1956	6.201
1957	6.305
1958	6.325
1959	6.272
1960	6.155
1961	5.989
1962	5.789
1963	5.574
1964	5.357
1965	5.157
1966	4.987
1967	4.845
1968	4.725
1969	4.624
1970	4.527
1971	4.414
1972	4.27
1973	4.088
1974	3.867
1975	3.618
1976	3.358
1977	3.107
1978	2.881
1979	2.686
1980	2.521
1981	2.378
1982	2.243
1983	2.11
1984	1.979
1985	1.856
1986	1.752
1987	1.674
1988	1.628
1989	1.61
1990	1.614
1991	1.631
1992	1.65
1993	1.659
1994	1.654
1995	1.632
1996	1.59
1997	1.537
1998	1.476
1999	1.413
2000	1.352
2001	1.298
2002	1.254
2003	1.221
2004	1.201
2005	1.195
2006	1.2
2007	1.212
2008	1.228
2009	1.247
2010	1.266
2011	1.285
2012	1.303
2013	1.321
2014	1.339
2015	1.355
2016	1.37
2017	1.385
2018	1.399
2019	1.413
2020	1.426
2021	1.439
2022	1.452
2023	1.464
2024	1.476
2030	1.543
2040	1.629
2050	1.693
2070	1.777
2080	1.803
2099	1.838