Year	Total
1800	6.89
1801	6.89
1802	6.89
1803	6.89
1804	6.89
1805	6.89
1806	6.89
1807	6.89
1808	6.89
1809	6.89
1810	6.89
1811	6.89
1812	6.89
1813	6.89
1814	6.89
1815	6.89
1816	6.89
1817	6.89
1818	6.89
1819	6.89
1820	6.89
1821	6.89
1822	6.89
1823	6.89
1824	6.89
1825	6.89
1826	6.89
1827	6.89
1828	6.89
1829	6.89
1830	6.89
1831	6.89
1832	6.89
1833	6.89
1834	6.89
1835	6.89
1836	6.89
1837	6.89
1838	6.89
1839	6.89
1840	6.89
1841	6.89
1842	6.89
1843	6.89
1844	6.89
1845	6.89
1846	6.89
1847	6.89
1848	6.89
1849	6.89
1850	6.89
1851	6.89
1852	6.89
1853	6.89
1854	6.89
1855	6.89
1856	6.89
1857	6.89
1858	6.89
1859	6.89
1860	6.89
1861	6.89
1862	6.89
1863	6.89
1864	6.89
1865	6.89
1866	6.89
1867	6.89
1868	6.89
1869	6.89
1870	6.89
1871	6.89
1872	6.89
1873	6.89
1874	6.89
1875	6.89
1876	6.89
1877	6.89
1878	6.89
1879	6.89
1880	6.89
1881	6.89
1882	6.89
1883	6.89
1884	6.89
1885	6.89
1886	6.89
1887	6.89
1888	6.89
1889	6.89
1890	6.89
1891	6.89
1892	6.89
1893	6.89
1894	6.89
1895	6.89
1896	6.89
1897	6.89
1898	6.89
1899	6.89
1900	6.89
1901	6.89
1902	6.89
1903	6.89
1904	6.89
1905	6.89
1906	6.89
1907	6.89
1908	6.89
1909	6.89
1910	6.89
1911	6.89
1912	6.89
1913	6.89
1914	6.89
1915	6.89
1916	6.89
1917	6.89
1918	6.89
1919	6.89
1920	6.89
1921	6.89
1922	6.89
1923	6.89
1924	6.89
1925	6.89
1926	6.89
1927	6.89
1928	6.89
1929	6.89
1930	6.89
1931	6.89
1932	6.89
1933	6.89
1934	6.89
1935	6.89
1936	6.89
1937	6.89
1938	6.89
1939	6.89
1940	6.89
1941	6.89
1942	6.89
1943	6.89
1944	6.89
1945	6.89
1946	6.89
1947	6.89
1948	6.89
1949	6.89
1950	6.89
1951	6.89
1952	6.9
1953	6.9
1954	6.91
1955	6.92
1956	6.93
1957	6.94
1958	6.96
1959	6.98
1960	7
1961	7.02
1962	7.04
1963	7.06
1964	7.08
1965	7.09
1966	7.11
1967	7.11
1968	7.12
1969	7.12
1970	7.12
1971	7.11
1972	7.11
1973	7.1
1974	7.1
1975	7.1
1976	7.1
1977	7.1
1978	7.1
1979	7.1
1980	7.1
1981	7.1
1982	7.1
1983	7.1
1984	7.1
1985	7.1
1986	7.1
1987	7.1
1988	7.1
1989	7.1
1990	7.09
1991	7.08
1992	7.07
1993	7.06
1994	7.04
1995	7.02
1996	6.99
1997	6.97
1998	6.94
1999	6.9
2000	6.87
2001	6.82
2002	6.77
2003	6.72
2004	6.65
2005	6.58
2006	6.51
2007	6.42
2008	6.34
2009	6.25
2010	6.15
2011	6.06
2012	5.96
2013	5.87
2014	5.78
2015	5.68
2016	5.59
2017	5.5
2018	5.41