Year	Total
1800	6.11
1801	6.11
1802	6.11
1803	6.11
1804	6.11
1805	6.11
1806	6.11
1807	6.11
1808	6.11
1809	6.11
1810	6.11
1811	6.11
1812	6.11
1813	6.11
1814	6.11
1815	6.11
1816	6.11
1817	6.11
1818	6.11
1819	6.11
1820	6.11
1821	6.11
1822	6.11
1823	6.11
1824	6.11
1825	6.11
1826	6.11
1827	6.11
1828	6.11
1829	6.11
1830	6.11
1831	6.11
1832	6.11
1833	6.11
1834	6.11
1835	6.11
1836	6.11
1837	6.11
1838	6.11
1839	6.11
1840	6.11
1841	6.11
1842	6.11
1843	6.11
1844	6.11
1845	6.11
1846	6.11
1847	6.11
1848	6.11
1849	6.11
1850	6.11
1851	6.11
1852	6.11
1853	6.11
1854	6.11
1855	6.11
1856	6.11
1857	6.11
1858	6.11
1859	6.11
1860	6.11
1861	6.11
1862	6.11
1863	6.11
1864	6.11
1865	6.11
1866	6.11
1867	6.11
1868	6.11
1869	6.11
1870	6.11
1871	6.11
1872	6.11
1873	6.11
1874	6.11
1875	6.11
1876	6.11
1877	6.11
1878	6.11
1879	6.11
1880	6.11
1881	6.11
1882	6.11
1883	6.11
1884	6.11
1885	6.11
1886	6.11
1887	6.11
1888	6.11
1889	6.11
1890	6.11
1891	6.11
1892	6.11
1893	6.11
1894	6.11
1895	6.11
1896	6.11
1897	6.11
1898	6.11
1899	6.11
1900	6.11
1901	6.11
1902	6.11
1903	6.11
1904	6.11
1905	6.11
1906	6.11
1907	6.11
1908	6.11
1909	6.11
1910	6.11
1911	6.11
1912	6.11
1913	6.11
1914	6.11
1915	6.11
1916	6.11
1917	6.11
1918	6.11
1919	6.11
1920	6.11
1921	6.11
1922	6.11
1923	6.11
1924	6.11
1925	6.11
1926	6.1
1927	6.1
1928	6.09
1929	6.09
1930	6.08
1931	6.08
1932	6.07
1933	6.07
1934	6.06
1935	6.06
1936	6.05
1937	6.05
1938	6.04
1939	6.04
1940	6.03
1941	6.02
1942	6.02
1943	6.01
1944	6.01
1945	6
1946	6
1947	5.99
1948	5.99
1949	5.98
1950	5.98
1951	5.98
1952	5.99
1953	6.01
1954	6.02
1955	6.03
1956	6.05
1957	6.07
1958	6.08
1959	6.1
1960	6.11
1961	6.13
1962	6.14
1963	6.15
1964	6.15
1965	6.16
1966	6.17
1967	6.18
1968	6.19
1969	6.21
1970	6.23
1971	6.25
1972	6.28
1973	6.31
1974	6.34
1975	6.37
1976	6.4
1977	6.44
1978	6.47
1979	6.5
1980	6.53
1981	6.56
1982	6.58
1983	6.6
1984	6.62
1985	6.63
1986	6.64
1987	6.64
1988	6.63
1989	6.62
1990	6.6
1991	6.57
1992	6.54
1993	6.49
1994	6.44
1995	6.39
1996	6.33
1997	6.27
1998	6.21
1999	6.15
2000	6.08
2001	6.02
2002	5.95
2003	5.88
2004	5.8
2005	5.73
2006	5.65
2007	5.58
2008	5.5
2009	5.42
2010	5.34
2011	5.26
2012	5.18
2013	5.09
2014	5.01
2015	4.93
2016	4.86
2017	4.78
2018	4.7