Year	Total
1800	6.23
1801	6.23
1802	6.23
1803	6.23
1804	6.23
1805	6.23
1806	6.23
1807	6.23
1808	6.23
1809	6.23
1810	6.23
1811	6.23
1812	6.23
1813	6.23
1814	6.23
1815	6.23
1816	6.23
1817	6.23
1818	6.23
1819	6.23
1820	6.23
1821	6.23
1822	6.23
1823	6.23
1824	6.23
1825	6.23
1826	6.23
1827	6.23
1828	6.23
1829	6.23
1830	6.23
1831	6.23
1832	6.23
1833	6.23
1834	6.23
1835	6.23
1836	6.23
1837	6.23
1838	6.23
1839	6.23
1840	6.23
1841	6.23
1842	6.23
1843	6.23
1844	6.23
1845	6.23
1846	6.23
1847	6.23
1848	6.23
1849	6.23
1850	6.23
1851	6.23
1852	6.23
1853	6.23
1854	6.23
1855	6.23
1856	6.23
1857	6.23
1858	6.23
1859	6.23
1860	6.23
1861	6.23
1862	6.23
1863	6.23
1864	6.23
1865	6.23
1866	6.23
1867	6.23
1868	6.23
1869	6.23
1870	6.23
1871	6.23
1872	6.23
1873	6.23
1874	6.23
1875	6.23
1876	6.23
1877	6.23
1878	6.23
1879	6.23
1880	6.23
1881	6.23
1882	6.23
1883	6.23
1884	6.23
1885	6.23
1886	6.23
1887	6.23
1888	6.23
1889	6.23
1890	6.23
1891	6.23
1892	6.23
1893	6.23
1894	6.23
1895	6.23
1896	6.23
1897	6.23
1898	6.23
1899	6.23
1900	6.23
1901	6.23
1902	6.23
1903	6.23
1904	6.23
1905	6.23
1906	6.23
1907	6.23
1908	6.23
1909	6.23
1910	6.23
1911	6.23
1912	6.23
1913	6.23
1914	6.23
1915	6.23
1916	6.23
1917	6.23
1918	6.23
1919	6.23
1920	6.23
1921	6.23
1922	6.23
1923	6.23
1924	6.23
1925	6.23
1926	6.23
1927	6.23
1928	6.23
1929	6.23
1930	6.23
1931	6.23
1932	6.23
1933	6.23
1934	6.23
1935	6.23
1936	6.23
1937	6.23
1938	6.23
1939	6.23
1940	6.23
1941	6.23
1942	6.23
1943	6.23
1944	6.23
1945	6.23
1946	6.23
1947	6.23
1948	6.23
1949	6.23
1950	6.23
1951	6.22
1952	6.2
1953	6.19
1954	6.19
1955	6.18
1956	6.19
1957	6.2
1958	6.21
1959	6.22
1960	6.24
1961	6.26
1962	6.28
1963	6.31
1964	6.33
1965	6.35
1966	6.37
1967	6.39
1968	6.42
1969	6.44
1970	6.47
1971	6.49
1972	6.51
1973	6.53
1974	6.53
1975	6.53
1976	6.52
1977	6.5
1978	6.47
1979	6.43
1980	6.39
1981	6.33
1982	6.28
1983	6.22
1984	6.16
1985	6.1
1986	6.04
1987	5.99
1988	5.93
1989	5.88
1990	5.82
1991	5.77
1992	5.71
1993	5.66
1994	5.6
1995	5.55
1996	5.49
1997	5.44
1998	5.38
1999	5.33
2000	5.28
2001	5.23
2002	5.17
2003	5.12
2004	5.07
2005	5.02
2006	4.97
2007	4.93
2008	4.88
2009	4.84
2010	4.79
2011	4.74
2012	4.69
2013	4.64
2014	4.58
2015	4.52
2016	4.46
2017	4.39
2018	4.33