Year	Total
1800	6.82
1801	6.82
1802	6.82
1803	6.82
1804	6.82
1805	6.82
1806	6.82
1807	6.82
1808	6.82
1809	6.82
1810	6.82
1811	6.82
1812	6.82
1813	6.82
1814	6.82
1815	6.82
1816	6.82
1817	6.82
1818	6.82
1819	6.82
1820	6.82
1821	6.82
1822	6.82
1823	6.82
1824	6.82
1825	6.82
1826	6.82
1827	6.82
1828	6.82
1829	6.82
1830	6.82
1831	6.82
1832	6.82
1833	6.82
1834	6.82
1835	6.82
1836	6.82
1837	6.82
1838	6.82
1839	6.82
1840	6.82
1841	6.82
1842	6.82
1843	6.82
1844	6.82
1845	6.82
1846	6.82
1847	6.82
1848	6.82
1849	6.82
1850	6.82
1851	6.82
1852	6.82
1853	6.82
1854	6.82
1855	6.82
1856	6.82
1857	6.82
1858	6.82
1859	6.82
1860	6.82
1861	6.82
1862	6.82
1863	6.82
1864	6.82
1865	6.82
1866	6.82
1867	6.82
1868	6.82
1869	6.82
1870	6.82
1871	6.82
1872	6.82
1873	6.82
1874	6.82
1875	6.82
1876	6.82
1877	6.82
1878	6.82
1879	6.82
1880	6.82
1881	6.82
1882	6.82
1883	6.82
1884	6.82
1885	6.82
1886	6.82
1887	6.82
1888	6.82
1889	6.82
1890	6.82
1891	6.82
1892	6.82
1893	6.82
1894	6.82
1895	6.82
1896	6.82
1897	6.82
1898	6.82
1899	6.82
1900	6.82
1901	6.81
1902	6.8
1903	6.79
1904	6.78
1905	6.77
1906	6.76
1907	6.75
1908	6.74
1909	6.73
1910	6.72
1911	6.71
1912	6.7
1913	6.69
1914	6.68
1915	6.67
1916	6.66
1917	6.65
1918	6.64
1919	6.63
1920	6.62
1921	6.61
1922	6.6
1923	6.59
1924	6.58
1925	6.57
1926	6.56
1927	6.55
1928	6.54
1929	6.53
1930	6.53
1931	6.54
1932	6.56
1933	6.58
1934	6.59
1935	6.61
1936	6.63
1937	6.65
1938	6.67
1939	6.68
1940	6.7
1941	6.72
1942	6.74
1943	6.76
1944	6.78
1945	6.8
1946	6.82
1947	6.84
1948	6.86
1949	6.88
1950	6.9
1951	6.9
1952	6.9
1953	6.91
1954	6.91
1955	6.92
1956	6.93
1957	6.94
1958	6.95
1959	6.96
1960	6.97
1961	6.97
1962	6.96
1963	6.95
1964	6.92
1965	6.88
1966	6.82
1967	6.73
1968	6.63
1969	6.51
1970	6.38
1971	6.24
1972	6.1
1973	5.96
1974	5.83
1975	5.71
1976	5.58
1977	5.45
1978	5.31
1979	5.17
1980	5.02
1981	4.88
1982	4.73
1983	4.6
1984	4.48
1985	4.36
1986	4.25
1987	4.14
1988	4.04
1989	3.93
1990	3.83
1991	3.72
1992	3.62
1993	3.51
1994	3.41
1995	3.32
1996	3.23
1997	3.14
1998	3.06
1999	2.99
2000	2.93
2001	2.87
2002	2.82
2003	2.77
2004	2.73
2005	2.68
2006	2.65
2007	2.62
2008	2.59
2009	2.57
2010	2.55
2011	2.53
2012	2.5
2013	2.48
2014	2.46
2015	2.43
2016	2.4
2017	2.37
2018	2.34