Year	Total
1800	8.1
1801	8.1
1802	8.1
1803	8.1
1804	8.1
1805	8.1
1806	8.1
1807	8.1
1808	8.1
1809	8.1
1810	8.1
1811	8.1
1812	8.1
1813	8.1
1814	8.1
1815	8.1
1816	8.1
1817	8.1
1818	8.1
1819	8.1
1820	8.1
1821	8.1
1822	8.1
1823	8.1
1824	8.1
1825	8.1
1826	8.1
1827	8.1
1828	8.1
1829	8.1
1830	8.1
1831	8.1
1832	8.1
1833	8.1
1834	8.1
1835	8.1
1836	8.1
1837	8.1
1838	8.1
1839	8.1
1840	8.1
1841	8.1
1842	8.1
1843	8.1
1844	8.1
1845	8.1
1846	8.1
1847	8.1
1848	8.1
1849	8.1
1850	8.1
1851	8.1
1852	8.1
1853	8.1
1854	8.1
1855	8.1
1856	8.1
1857	8.1
1858	8.1
1859	8.1
1860	8.1
1861	8.1
1862	8.1
1863	8.1
1864	8.1
1865	8.1
1866	8.1
1867	8.1
1868	8.1
1869	8.1
1870	8.1
1871	8.1
1872	8.1
1873	8.1
1874	8.1
1875	8.1
1876	8.1
1877	8.1
1878	8.1
1879	8.1
1880	8.1
1881	8.1
1882	8.1
1883	8.1
1884	8.1
1885	8.1
1886	8.1
1887	8.1
1888	8.1
1889	8.1
1890	8.1
1891	8.1
1892	8.1
1893	8.1
1894	8.1
1895	8.1
1896	8.07
1897	8.04
1898	8.01
1899	7.98
1900	7.95
1901	7.92
1902	7.89
1903	7.86
1904	7.83
1905	7.8
1906	7.77
1907	7.74
1908	7.71
1909	7.68
1910	7.65
1911	7.62
1912	7.59
1913	7.56
1914	7.53
1915	7.5
1916	7.47
1917	7.44
1918	7.41
1919	7.38
1920	7.35
1921	7.32
1922	7.29
1923	7.26
1924	7.23
1925	7.2
1926	7.138
1927	7.076
1928	7.013
1929	6.951
1930	6.889
1931	6.827
1932	6.764
1933	6.702
1934	6.64
1935	6.578
1936	6.515
1937	6.453
1938	6.391
1939	6.329
1940	6.266
1941	6.204
1942	6.142
1943	6.08
1944	6.017
1945	5.955
1946	5.893
1947	5.831
1948	5.768
1949	5.706
1950	5.644
1951	5.593
1952	5.505
1953	5.443
1954	5.405
1955	5.393
1956	5.403
1957	5.434
1958	5.479
1959	5.528
1960	5.571
1961	5.596
1962	5.591
1963	5.549
1964	5.468
1965	5.352
1966	5.21
1967	5.056
1968	4.901
1969	4.753
1970	4.612
1971	4.479
1972	4.348
1973	4.216
1974	4.084
1975	3.95
1976	3.814
1977	3.676
1978	3.539
1979	3.407
1980	3.286
1981	3.179
1982	3.092
1983	3.026
1984	2.98
1985	2.954
1986	2.947
1987	2.953
1988	2.964
1989	2.973
1990	2.969
1991	2.94
1992	2.883
1993	2.799
1994	2.688
1995	2.561
1996	2.427
1997	2.301
1998	2.193
1999	2.108
2000	2.049
2001	2.014
2002	1.997
2003	1.989
2004	1.987
2005	1.988
2006	1.989
2007	1.989
2008	1.986
2009	1.98
2010	1.97
2011	1.956
2012	1.94
2013	1.924
2014	1.908
2015	1.893
2016	1.879
2017	1.865
2018	1.852
2019	1.841
2020	1.83
2021	1.821
2022	1.813
2023	1.805
2024	1.799
2030	1.775
2040	1.765
2050	1.773
2070	1.808
2080	1.824
2099	1.853