Year	Total
1800	6.1
1801	6.1
1802	6.1
1803	6.1
1804	6.1
1805	6.1
1806	6.1
1807	6.1
1808	6.1
1809	6.1
1810	6.1
1811	6.1
1812	6.1
1813	6.1
1814	6.1
1815	6.1
1816	6.1
1817	6.1
1818	6.1
1819	6.1
1820	6.1
1821	6.1
1822	6.1
1823	6.1
1824	6.1
1825	6.1
1826	6.1
1827	6.1
1828	6.1
1829	6.1
1830	6.1
1831	6.1
1832	6.1
1833	6.1
1834	6.1
1835	6.1
1836	6.1
1837	6.1
1838	6.1
1839	6.1
1840	6.1
1841	6.1
1842	6.1
1843	6.1
1844	6.1
1845	6.1
1846	6.1
1847	6.1
1848	6.1
1849	6.1
1850	6.1
1851	6.1
1852	6.1
1853	6.1
1854	6.1
1855	6.1
1856	6.1
1857	6.1
1858	6.1
1859	6.1
1860	6.1
1861	6.1
1862	6.1
1863	6.1
1864	6.1
1865	6.1
1866	6.1
1867	6.1
1868	6.1
1869	6.1
1870	6.1
1871	6.1
1872	6.1
1873	6.1
1874	6.1
1875	6.1
1876	6.1
1877	6.1
1878	6.1
1879	6.1
1880	6.1
1881	6.1
1882	6.1
1883	6.1
1884	6.1
1885	6.1
1886	6.1
1887	6.1
1888	6.1
1889	6.1
1890	6.1
1891	6.1
1892	6.1
1893	6.1
1894	6.1
1895	6.1
1896	6.1
1897	6.1
1898	6.1
1899	6.1
1900	6.1
1901	6.102
1902	6.104
1903	6.107
1904	6.109
1905	6.111
1906	6.113
1907	6.116
1908	6.118
1909	6.12
1910	6.122
1911	6.124
1912	6.127
1913	6.129
1914	6.131
1915	6.133
1916	6.136
1917	6.138
1918	6.14
1919	6.14
1920	6.14
1921	6.14
1922	6.14
1923	6.14
1924	6.084
1925	6.028
1926	5.972
1927	5.916
1928	5.86
1929	5.908
1930	5.956
1931	6.004
1932	6.052
1933	6.1
1934	6.12
1935	6.14
1936	6.16
1937	6.18
1938	6.2
1939	6.16
1940	6.12
1941	6.08
1942	6.04
1943	6
1944	5.421
1945	4.842
1946	4.263
1947	3.683
1948	3.104
1949	2.525
1950	1.946
1951	2.407
1952	3.247
1953	3.923
1954	4.435
1955	4.786
1956	4.981
1957	5.031
1958	4.957
1959	4.793
1960	4.579
1961	4.357
1962	4.173
1963	4.057
1964	4.022
1965	4.064
1966	4.159
1967	4.262
1968	4.336
1969	4.364
1970	4.327
1971	4.214
1972	4.038
1973	3.816
1974	3.564
1975	3.307
1976	3.075
1977	2.889
1978	2.761
1979	2.693
1980	2.676
1981	2.687
1982	2.698
1983	2.69
1984	2.654
1985	2.593
1986	2.515
1987	2.438
1988	2.374
1989	2.325
1990	2.289
1991	2.262
1992	2.235
1993	2.202
1994	2.163
1995	2.121
1996	2.079
1997	2.042
1998	2.015
1999	1.999
2000	1.991
2001	1.992
2002	1.996
2003	2
2004	2.004
2005	2.005
2006	2.006
2007	2.005
2008	2.005
2009	2.004
2010	2.003
2011	2
2012	1.995
2013	1.988
2014	1.979
2015	1.969
2016	1.958
2017	1.947
2018	1.937
2019	1.927
2020	1.919
2021	1.912
2022	1.906
2023	1.901
2024	1.896
2030	1.87
2040	1.843
2050	1.835
2070	1.847
2080	1.857
2099	1.873