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	6.77
1927	6.77
1928	6.76
1929	6.75
1930	6.75
1931	6.74
1932	6.74
1933	6.73
1934	6.72
1935	6.72
1936	6.71
1937	6.7
1938	6.7
1939	6.69
1940	6.69
1941	6.68
1942	6.67
1943	6.67
1944	6.66
1945	6.65
1946	6.65
1947	6.64
1948	6.63
1949	6.63
1950	6.62
1951	6.66
1952	6.74
1953	6.81
1954	6.89
1955	6.97
1956	7.04
1957	7.12
1958	7.2
1959	7.27
1960	7.35
1961	7.43
1962	7.51
1963	7.58
1964	7.65
1965	7.71
1966	7.77
1967	7.82
1968	7.86
1969	7.89
1970	7.91
1971	7.93
1972	7.94
1973	7.94
1974	7.93
1975	7.91
1976	7.88
1977	7.83
1978	7.77
1979	7.69
1980	7.6
1981	7.49
1982	7.38
1983	7.27
1984	7.15
1985	7.04
1986	6.93
1987	6.82
1988	6.71
1989	6.6
1990	6.5
1991	6.4
1992	6.3
1993	6.22
1994	6.14
1995	6.06
1996	5.99
1997	5.92
1998	5.85
1999	5.78
2000	5.71
2001	5.65
2002	5.58
2003	5.52
2004	5.47
2005	5.42
2006	5.38
2007	5.34
2008	5.3
2009	5.26
2010	5.22
2011	5.18
2012	5.14
2013	5.08
2014	5.03
2015	4.97
2016	4.91
2017	4.85
2018	4.78