Year	Total
1800	6.96
1801	6.96
1802	6.96
1803	6.96
1804	6.96
1805	6.96
1806	6.96
1807	6.96
1808	6.96
1809	6.96
1810	6.96
1811	6.96
1812	6.96
1813	6.96
1814	6.96
1815	6.96
1816	6.96
1817	6.96
1818	6.96
1819	6.96
1820	6.96
1821	6.96
1822	6.96
1823	6.96
1824	6.96
1825	6.96
1826	6.96
1827	6.96
1828	6.96
1829	6.96
1830	6.96
1831	6.96
1832	6.96
1833	6.96
1834	6.96
1835	6.96
1836	6.96
1837	6.96
1838	6.96
1839	6.96
1840	6.96
1841	6.96
1842	6.96
1843	6.96
1844	6.96
1845	6.96
1846	6.96
1847	6.96
1848	6.96
1849	6.96
1850	6.96
1851	6.96
1852	6.96
1853	6.96
1854	6.96
1855	6.96
1856	6.96
1857	6.96
1858	6.96
1859	6.96
1860	6.96
1861	6.96
1862	6.96
1863	6.96
1864	6.96
1865	6.96
1866	6.96
1867	6.96
1868	6.96
1869	6.96
1870	6.96
1871	6.96
1872	6.96
1873	6.96
1874	6.96
1875	6.96
1876	6.96
1877	6.96
1878	6.96
1879	6.96
1880	6.96
1881	6.96
1882	6.96
1883	6.96
1884	6.96
1885	6.96
1886	6.96
1887	6.96
1888	6.96
1889	6.96
1890	6.96
1891	6.96
1892	6.96
1893	6.96
1894	6.96
1895	6.96
1896	6.96
1897	6.96
1898	6.96
1899	6.96
1900	6.96
1901	6.96
1902	6.96
1903	6.96
1904	6.96
1905	6.96
1906	6.96
1907	6.96
1908	6.96
1909	6.96
1910	6.96
1911	6.96
1912	6.96
1913	6.96
1914	6.96
1915	6.96
1916	6.96
1917	6.96
1918	6.96
1919	6.96
1920	6.96
1921	6.96
1922	6.96
1923	6.96
1924	6.96
1925	6.96
1926	6.96
1927	6.96
1928	6.96
1929	6.95
1930	6.95
1931	6.95
1932	6.95
1933	6.95
1934	6.95
1935	6.95
1936	6.94
1937	6.94
1938	6.94
1939	6.94
1940	6.94
1941	6.94
1942	6.94
1943	6.93
1944	6.93
1945	6.93
1946	6.93
1947	6.93
1948	6.93
1949	6.93
1950	6.92
1951	6.94
1952	6.96
1953	6.98
1954	6.99
1955	6.99
1956	6.98
1957	6.97
1958	6.95
1959	6.93
1960	6.9
1961	6.87
1962	6.84
1963	6.81
1964	6.78
1965	6.75
1966	6.73
1967	6.71
1968	6.69
1969	6.67
1970	6.65
1971	6.64
1972	6.62
1973	6.62
1974	6.61
1975	6.61
1976	6.61
1977	6.63
1978	6.64
1979	6.66
1980	6.68
1981	6.69
1982	6.69
1983	6.68
1984	6.67
1985	6.64
1986	6.6
1987	6.55
1988	6.5
1989	6.45
1990	6.39
1991	6.32
1992	6.23
1993	6.14
1994	6.03
1995	5.91
1996	5.79
1997	5.67
1998	5.55
1999	5.43
2000	5.33
2001	5.23
2002	5.15
2003	5.07
2004	5.01
2005	4.94
2006	4.88
2007	4.82
2008	4.75
2009	4.68
2010	4.61
2011	4.53
2012	4.44
2013	4.36
2014	4.29
2015	4.21
2016	4.13
2017	4.06
2018	3.99