Year	Total
1800	6.75
1801	6.75
1802	6.75
1803	6.75
1804	6.75
1805	6.75
1806	6.75
1807	6.75
1808	6.75
1809	6.75
1810	6.75
1811	6.75
1812	6.75
1813	6.75
1814	6.75
1815	6.75
1816	6.75
1817	6.75
1818	6.75
1819	6.75
1820	6.75
1821	6.75
1822	6.75
1823	6.75
1824	6.75
1825	6.75
1826	6.75
1827	6.75
1828	6.75
1829	6.75
1830	6.75
1831	6.75
1832	6.75
1833	6.75
1834	6.75
1835	6.75
1836	6.75
1837	6.75
1838	6.75
1839	6.75
1840	6.75
1841	6.75
1842	6.75
1843	6.75
1844	6.75
1845	6.75
1846	6.75
1847	6.75
1848	6.75
1849	6.75
1850	6.75
1851	6.75
1852	6.75
1853	6.75
1854	6.75
1855	6.75
1856	6.75
1857	6.75
1858	6.75
1859	6.75
1860	6.75
1861	6.75
1862	6.75
1863	6.75
1864	6.75
1865	6.75
1866	6.75
1867	6.75
1868	6.75
1869	6.75
1870	6.75
1871	6.75
1872	6.75
1873	6.75
1874	6.75
1875	6.75
1876	6.75
1877	6.75
1878	6.75
1879	6.75
1880	6.75
1881	6.75
1882	6.75
1883	6.75
1884	6.75
1885	6.75
1886	6.75
1887	6.75
1888	6.75
1889	6.75
1890	6.75
1891	6.75
1892	6.75
1893	6.75
1894	6.75
1895	6.75
1896	6.75
1897	6.75
1898	6.75
1899	6.75
1900	6.75
1901	6.75
1902	6.75
1903	6.75
1904	6.75
1905	6.75
1906	6.75
1907	6.75
1908	6.75
1909	6.75
1910	6.75
1911	6.75
1912	6.75
1913	6.75
1914	6.75
1915	6.75
1916	6.75
1917	6.75
1918	6.75
1919	6.75
1920	6.75
1921	6.75
1922	6.75
1923	6.75
1924	6.75
1925	6.75
1926	6.75
1927	6.75
1928	6.75
1929	6.75
1930	6.75
1931	6.75
1932	6.75
1933	6.75
1934	6.75
1935	6.75
1936	6.75
1937	6.75
1938	6.75
1939	6.75
1940	6.75
1941	6.75
1942	6.75
1943	6.75
1944	6.75
1945	6.75
1946	6.75
1947	6.75
1948	6.75
1949	6.75
1950	6.75
1951	6.76
1952	6.78
1953	6.81
1954	6.84
1955	6.88
1956	6.93
1957	6.98
1958	7.04
1959	7.1
1960	7.16
1961	7.22
1962	7.27
1963	7.31
1964	7.35
1965	7.37
1966	7.39
1967	7.4
1968	7.41
1969	7.42
1970	7.42
1971	7.42
1972	7.42
1973	7.42
1974	7.41
1975	7.4
1976	7.37
1977	7.33
1978	7.27
1979	7.2
1980	7.1
1981	6.97
1982	6.81
1983	6.63
1984	6.44
1985	6.22
1986	6
1987	5.78
1988	5.57
1989	5.37
1990	5.18
1991	5
1992	4.84
1993	4.69
1994	4.56
1995	4.43
1996	4.33
1997	4.24
1998	4.16
1999	4.1
2000	4.06
2001	4.02
2002	4
2003	3.99
2004	3.98
2005	3.99
2006	3.99
2007	4
2008	4.01
2009	4.02
2010	4.03
2011	4.02
2012	4
2013	3.96
2014	3.9
2015	3.84
2016	3.76
2017	3.68
2018	3.61