Year	Total
1800	6.8
1801	6.8
1802	6.8
1803	6.8
1804	6.8
1805	6.8
1806	6.8
1807	6.8
1808	6.8
1809	6.8
1810	6.8
1811	6.8
1812	6.8
1813	6.8
1814	6.8
1815	6.8
1816	6.8
1817	6.8
1818	6.8
1819	6.8
1820	6.8
1821	6.8
1822	6.8
1823	6.8
1824	6.8
1825	6.8
1826	6.8
1827	6.8
1828	6.8
1829	6.8
1830	6.8
1831	6.8
1832	6.8
1833	6.8
1834	6.8
1835	6.8
1836	6.8
1837	6.8
1838	6.8
1839	6.8
1840	6.8
1841	6.8
1842	6.8
1843	6.8
1844	6.8
1845	6.8
1846	6.8
1847	6.8
1848	6.8
1849	6.8
1850	6.8
1851	6.8
1852	6.8
1853	6.8
1854	6.8
1855	6.8
1856	6.8
1857	6.8
1858	6.8
1859	6.8
1860	6.8
1861	6.8
1862	6.8
1863	6.8
1864	6.8
1865	6.8
1866	6.8
1867	6.8
1868	6.8
1869	6.8
1870	6.8
1871	6.8
1872	6.8
1873	6.8
1874	6.8
1875	6.8
1876	6.8
1877	6.8
1878	6.8
1879	6.8
1880	6.8
1881	6.8
1882	6.8
1883	6.8
1884	6.8
1885	6.8
1886	6.8
1887	6.8
1888	6.8
1889	6.8
1890	6.8
1891	6.8
1892	6.8
1893	6.8
1894	6.8
1895	6.8
1896	6.8
1897	6.8
1898	6.8
1899	6.8
1900	6.8
1901	6.516
1902	6.231
1903	6.218
1904	6.204
1905	6.191
1906	6.177
1907	6.164
1908	6.089
1909	6.014
1910	5.939
1911	5.864
1912	5.789
1913	5.719
1914	5.649
1915	5.58
1916	5.51
1917	5.44
1918	5.566
1919	5.692
1920	5.818
1921	5.944
1922	6.07
1923	6.043
1924	6.017
1925	5.99
1926	5.963
1927	5.936
1928	5.944
1929	5.952
1930	5.96
1931	5.968
1932	5.976
1933	5.947
1934	5.917
1935	5.888
1936	5.858
1937	5.829
1938	5.858
1939	5.888
1940	5.917
1941	5.947
1942	5.976
1943	6.056
1944	6.136
1945	6.216
1946	6.296
1947	6.376
1948	6.455
1949	6.535
1950	6.615
1951	6.641
1952	6.687
1953	6.725
1954	6.755
1955	6.776
1956	6.79
1957	6.796
1958	6.795
1959	6.79
1960	6.783
1961	6.776
1962	6.771
1963	6.768
1964	6.767
1965	6.769
1966	6.773
1967	6.777
1968	6.775
1969	6.76
1970	6.72
1971	6.643
1972	6.525
1973	6.364
1974	6.164
1975	5.932
1976	5.679
1977	5.418
1978	5.163
1979	4.924
1980	4.705
1981	4.51
1982	4.334
1983	4.174
1984	4.029
1985	3.898
1986	3.778
1987	3.669
1988	3.566
1989	3.468
1990	3.375
1991	3.285
1992	3.199
1993	3.117
1994	3.04
1995	2.966
1996	2.896
1997	2.831
1998	2.77
1999	2.712
2000	2.659
2001	2.61
2002	2.565
2003	2.523
2004	2.484
2005	2.448
2006	2.413
2007	2.379
2008	2.346
2009	2.313
2010	2.281
2011	2.248
2012	2.216
2013	2.185
2014	2.155
2015	2.126
2016	2.098
2017	2.071
2018	2.046
2019	2.021
2020	1.997
2021	1.975
2022	1.954
2023	1.934
2024	1.915
2030	1.823
2040	1.746
2050	1.738
2070	1.777
2080	1.802
2099	1.837