Year	Total
1800	4.2
1801	4.2
1802	4.2
1803	4.2
1804	4.2
1805	4.2
1806	4.2
1807	4.2
1808	4.2
1809	4.2
1810	4.2
1811	4.2
1812	4.2
1813	4.2
1814	4.2
1815	4.2
1816	4.2
1817	4.2
1818	4.2
1819	4.2
1820	4.2
1821	4.2
1822	4.2
1823	4.2
1824	4.2
1825	4.2
1826	4.2
1827	4.2
1828	4.2
1829	4.2
1830	4.2
1831	4.2
1832	4.2
1833	4.2
1834	4.2
1835	4.2
1836	4.2
1837	4.2
1838	4.2
1839	4.2
1840	4.2
1841	4.2
1842	4.2
1843	4.2
1844	4.2
1845	4.2
1846	4.2
1847	4.2
1848	4.2
1849	4.2
1850	4.2
1851	4.131
1852	4.063
1853	3.994
1854	3.926
1855	3.857
1856	3.789
1857	3.72
1858	3.652
1859	3.583
1860	3.514
1861	3.446
1862	3.377
1863	3.309
1864	3.24
1865	3.473
1866	3.545
1867	3.526
1868	3.582
1869	3.583
1870	3.712
1871	3.67
1872	3.723
1873	3.632
1874	3.573
1875	3.511
1876	3.567
1877	3.541
1878	3.402
1879	3.443
1880	3.31
1881	3.334
1882	3.221
1883	3.153
1884	3.203
1885	3.147
1886	3.111
1887	3.101
1888	3.059
1889	3.037
1890	2.988
1891	3.048
1892	3.013
1893	3.086
1894	3.078
1895	3.118
1896	3.174
1897	3.156
1898	3.129
1899	3.093
1900	3.043
1901	2.923
1902	3.079
1903	3.088
1904	3.155
1905	3.131
1906	3.153
1907	3.106
1908	3.117
1909	3.14
1910	3.117
1911	3.073
1912	3.098
1913	3.086
1914	3.055
1915	2.994
1916	2.867
1917	2.709
1918	2.733
1919	2.75
1920	3.2
1921	2.792
1922	2.609
1923	2.743
1924	2.827
1925	2.786
1926	2.759
1927	2.721
1928	2.693
1929	2.659
1930	2.671
1931	2.608
1932	2.555
1933	2.595
1934	2.611
1935	2.628
1936	2.92
1937	2.568
1938	2.597
1939	2.561
1940	2.564
1941	2.9
1942	2.99
1943	2.928
1944	2.978
1945	3.04
1946	3.33
1947	3.455
1948	3.58
1949	3.527
1950	3.475
1951	3.449
1952	3.409
1953	3.394
1954	3.404
1955	3.439
1956	3.496
1957	3.574
1958	3.666
1959	3.764
1960	3.857
1961	3.933
1962	3.984
1963	4.002
1964	3.987
1965	3.949
1966	3.902
1967	3.859
1968	3.83
1969	3.817
1970	3.813
1971	3.807
1972	3.785
1973	3.739
1974	3.667
1975	3.571
1976	3.458
1977	3.338
1978	3.221
1979	3.109
1980	3.001
1981	2.897
1982	2.79
1983	2.678
1984	2.564
1985	2.45
1986	2.338
1987	2.234
1988	2.14
1989	2.06
1990	1.996
1991	1.949
1992	1.918
1993	1.901
1994	1.895
1995	1.898
1996	1.907
1997	1.919
1998	1.932
1999	1.943
2000	1.951
2001	1.958
2002	1.965
2003	1.972
2004	1.979
2005	1.987
2006	1.993
2007	1.999
2008	2.002
2009	2.003
2010	2.003
2011	2.002
2012	1.999
2013	1.997
2014	1.995
2015	1.993
2016	1.992
2017	1.991
2018	1.99
2019	1.989
2020	1.989
2021	1.988
2022	1.987
2023	1.986
2024	1.985
2030	1.981
2040	1.976
2050	1.972
2070	1.97
2080	1.97
2099	1.969