Year	Total
1800	6.71
1801	6.71
1802	6.71
1803	6.71
1804	6.71
1805	6.71
1806	6.71
1807	6.71
1808	6.71
1809	6.71
1810	6.71
1811	6.71
1812	6.71
1813	6.71
1814	6.71
1815	6.71
1816	6.71
1817	6.71
1818	6.71
1819	6.71
1820	6.71
1821	6.71
1822	6.71
1823	6.71
1824	6.71
1825	6.71
1826	6.71
1827	6.71
1828	6.71
1829	6.71
1830	6.71
1831	6.71
1832	6.71
1833	6.71
1834	6.71
1835	6.71
1836	6.71
1837	6.71
1838	6.71
1839	6.71
1840	6.71
1841	6.71
1842	6.71
1843	6.71
1844	6.71
1845	6.71
1846	6.71
1847	6.71
1848	6.71
1849	6.71
1850	6.71
1851	6.71
1852	6.71
1853	6.71
1854	6.71
1855	6.71
1856	6.71
1857	6.71
1858	6.71
1859	6.71
1860	6.71
1861	6.71
1862	6.71
1863	6.71
1864	6.71
1865	6.71
1866	6.71
1867	6.71
1868	6.71
1869	6.71
1870	6.71
1871	6.71
1872	6.71
1873	6.71
1874	6.71
1875	6.71
1876	6.71
1877	6.71
1878	6.71
1879	6.71
1880	6.71
1881	6.71
1882	6.71
1883	6.71
1884	6.71
1885	6.71
1886	6.71
1887	6.71
1888	6.71
1889	6.71
1890	6.71
1891	6.71
1892	6.71
1893	6.71
1894	6.71
1895	6.71
1896	6.71
1897	6.71
1898	6.71
1899	6.71
1900	6.71
1901	6.71
1902	6.71
1903	6.71
1904	6.71
1905	6.71
1906	6.71
1907	6.71
1908	6.71
1909	6.71
1910	6.71
1911	6.71
1912	6.71
1913	6.71
1914	6.71
1915	6.71
1916	6.71
1917	6.71
1918	6.71
1919	6.71
1920	6.71
1921	6.71
1922	6.71
1923	6.71
1924	6.71
1925	6.71
1926	6.71
1927	6.71
1928	6.71
1929	6.71
1930	6.71
1931	6.71
1932	6.71
1933	6.71
1934	6.71
1935	6.71
1936	6.71
1937	6.71
1938	6.71
1939	6.7
1940	6.7
1941	6.7
1942	6.7
1943	6.7
1944	6.69
1945	6.69
1946	6.69
1947	6.68
1948	6.68
1949	6.68
1950	6.67
1951	6.68
1952	6.7
1953	6.73
1954	6.77
1955	6.81
1956	6.86
1957	6.92
1958	6.98
1959	7.05
1960	7.12
1961	7.17
1962	7.21
1963	7.25
1964	7.27
1965	7.29
1966	7.3
1967	7.32
1968	7.33
1969	7.35
1970	7.37
1971	7.38
1972	7.39
1973	7.39
1974	7.38
1975	7.36
1976	7.32
1977	7.28
1978	7.22
1979	7.16
1980	7.09
1981	7.02
1982	6.95
1983	6.88
1984	6.81
1985	6.75
1986	6.69
1987	6.62
1988	6.56
1989	6.5
1990	6.44
1991	6.38
1992	6.33
1993	6.28
1994	6.23
1995	6.19
1996	6.15
1997	6.12
1998	6.09
1999	6.07
2000	6.04
2001	6
2002	5.96
2003	5.92
2004	5.86
2005	5.79
2006	5.72
2007	5.64
2008	5.56
2009	5.48
2010	5.4
2011	5.32
2012	5.24
2013	5.17
2014	5.1
2015	5.04
2016	4.98
2017	4.93
2018	4.87