Year	Total
1800	6.78
1801	6.78
1802	6.78
1803	6.78
1804	6.78
1805	6.78
1806	6.78
1807	6.78
1808	6.78
1809	6.78
1810	6.78
1811	6.78
1812	6.78
1813	6.78
1814	6.78
1815	6.78
1816	6.78
1817	6.78
1818	6.78
1819	6.78
1820	6.78
1821	6.78
1822	6.78
1823	6.78
1824	6.78
1825	6.78
1826	6.78
1827	6.78
1828	6.78
1829	6.78
1830	6.78
1831	6.78
1832	6.78
1833	6.78
1834	6.78
1835	6.78
1836	6.78
1837	6.78
1838	6.78
1839	6.78
1840	6.78
1841	6.78
1842	6.78
1843	6.78
1844	6.78
1845	6.78
1846	6.78
1847	6.78
1848	6.78
1849	6.78
1850	6.78
1851	6.78
1852	6.78
1853	6.78
1854	6.78
1855	6.78
1856	6.78
1857	6.78
1858	6.78
1859	6.78
1860	6.78
1861	6.78
1862	6.78
1863	6.78
1864	6.78
1865	6.78
1866	6.78
1867	6.78
1868	6.78
1869	6.78
1870	6.78
1871	6.78
1872	6.78
1873	6.78
1874	6.78
1875	6.78
1876	6.78
1877	6.78
1878	6.78
1879	6.78
1880	6.78
1881	6.78
1882	6.78
1883	6.78
1884	6.78
1885	6.78
1886	6.78
1887	6.78
1888	6.78
1889	6.78
1890	6.78
1891	6.78
1892	6.78
1893	6.78
1894	6.78
1895	6.78
1896	6.78
1897	6.78
1898	6.78
1899	6.78
1900	6.78
1901	6.78
1902	6.78
1903	6.78
1904	6.78
1905	6.78
1906	6.78
1907	6.78
1908	6.78
1909	6.78
1910	6.78
1911	6.78
1912	6.78
1913	6.78
1914	6.78
1915	6.78
1916	6.78
1917	6.78
1918	6.78
1919	6.78
1920	6.78
1921	6.78
1922	6.78
1923	6.78
1924	6.78
1925	6.78
1926	6.78
1927	6.78
1928	6.78
1929	6.78
1930	6.78
1931	6.78
1932	6.78
1933	6.78
1934	6.78
1935	6.78
1936	6.78
1937	6.79
1938	6.79
1939	6.79
1940	6.79
1941	6.79
1942	6.79
1943	6.79
1944	6.8
1945	6.8
1946	6.8
1947	6.8
1948	6.8
1949	6.81
1950	6.81
1951	6.81
1952	6.82
1953	6.82
1954	6.83
1955	6.85
1956	6.86
1957	6.88
1958	6.9
1959	6.92
1960	6.94
1961	6.96
1962	6.99
1963	7.02
1964	7.06
1965	7.1
1966	7.14
1967	7.18
1968	7.22
1969	7.26
1970	7.3
1971	7.35
1972	7.39
1973	7.43
1974	7.48
1975	7.52
1976	7.56
1977	7.59
1978	7.62
1979	7.64
1980	7.64
1981	7.64
1982	7.62
1983	7.59
1984	7.54
1985	7.47
1986	7.39
1987	7.29
1988	7.18
1989	7.05
1990	6.92
1991	6.8
1992	6.68
1993	6.58
1994	6.5
1995	6.42
1996	6.36
1997	6.31
1998	6.26
1999	6.2
2000	6.15
2001	6.1
2002	6.05
2003	6
2004	5.96
2005	5.9
2006	5.83
2007	5.73
2008	5.61
2009	5.47
2010	5.31
2011	5.15
2012	4.99
2013	4.86
2014	4.74
2015	4.65
2016	4.57
2017	4.51
2018	4.44