Year	Total
1800	6.5
1801	6.5
1802	6.5
1803	6.5
1804	6.5
1805	6.5
1806	6.5
1807	6.5
1808	6.5
1809	6.5
1810	6.5
1811	6.5
1812	6.5
1813	6.5
1814	6.5
1815	6.5
1816	6.5
1817	6.5
1818	6.5
1819	6.5
1820	6.5
1821	6.5
1822	6.5
1823	6.5
1824	6.5
1825	6.5
1826	6.5
1827	6.5
1828	6.5
1829	6.5
1830	6.5
1831	6.5
1832	6.5
1833	6.5
1834	6.5
1835	6.5
1836	6.5
1837	6.5
1838	6.5
1839	6.5
1840	6.5
1841	6.5
1842	6.5
1843	6.5
1844	6.5
1845	6.5
1846	6.5
1847	6.5
1848	6.5
1849	6.5
1850	6.5
1851	6.5
1852	6.5
1853	6.5
1854	6.5
1855	6.5
1856	6.5
1857	6.5
1858	6.5
1859	6.5
1860	6.5
1861	6.5
1862	6.5
1863	6.5
1864	6.5
1865	6.5
1866	6.5
1867	6.5
1868	6.5
1869	6.5
1870	6.5
1871	6.5
1872	6.5
1873	6.5
1874	6.5
1875	6.5
1876	6.5
1877	6.5
1878	6.5
1879	6.5
1880	6.5
1881	6.5
1882	6.5
1883	6.5
1884	6.5
1885	6.5
1886	6.5
1887	6.5
1888	6.5
1889	6.5
1890	6.5
1891	6.5
1892	6.5
1893	6.5
1894	6.5
1895	6.5
1896	6.5
1897	6.5
1898	6.5
1899	6.5
1900	6.5
1901	6.5
1902	6.5
1903	6.5
1904	6.5
1905	6.5
1906	6.5
1907	6.5
1908	6.5
1909	6.5
1910	6.5
1911	6.5
1912	6.5
1913	6.5
1914	6.5
1915	6.5
1916	6.5
1917	6.5
1918	6.5
1919	6.5
1920	6.5
1921	6.5
1922	6.5
1923	6.5
1924	6.5
1925	6.5
1926	6.5
1927	6.5
1928	6.5
1929	6.5
1930	6.5
1931	6.5
1932	6.5
1933	6.5
1934	6.5
1935	6.5
1936	6.5
1937	6.5
1938	6.5
1939	6.5
1940	6.5
1941	6.5
1942	6.5
1943	6.5
1944	6.5
1945	6.5
1946	6.5
1947	6.5
1948	6.49
1949	6.49
1950	6.49
1951	6.52
1952	6.58
1953	6.64
1954	6.7
1955	6.76
1956	6.82
1957	6.89
1958	6.94
1959	7
1960	7.04
1961	7.07
1962	7.09
1963	7.09
1964	7.07
1965	7.03
1966	6.97
1967	6.9
1968	6.82
1969	6.74
1970	6.65
1971	6.55
1972	6.46
1973	6.36
1974	6.26
1975	6.16
1976	6.06
1977	5.97
1978	5.88
1979	5.78
1980	5.68
1981	5.57
1982	5.44
1983	5.29
1984	5.12
1985	4.94
1986	4.75
1987	4.57
1988	4.39
1989	4.22
1990	4.06
1991	3.9
1992	3.75
1993	3.6
1994	3.45
1995	3.3
1996	3.16
1997	3.04
1998	2.93
1999	2.85
2000	2.78
2001	2.72
2002	2.68
2003	2.64
2004	2.61
2005	2.59
2006	2.57
2007	2.56
2008	2.56
2009	2.57
2010	2.58
2011	2.58
2012	2.58
2013	2.57
2014	2.56
2015	2.53
2016	2.49
2017	2.45
2018	2.42