Year	Total
1800	5.67
1801	5.67
1802	5.67
1803	5.67
1804	5.67
1805	5.67
1806	5.67
1807	5.67
1808	5.67
1809	5.67
1810	5.67
1811	5.67
1812	5.67
1813	5.67
1814	5.67
1815	5.67
1816	5.67
1817	5.67
1818	5.67
1819	5.67
1820	5.67
1821	5.67
1822	5.67
1823	5.67
1824	5.67
1825	5.67
1826	5.67
1827	5.67
1828	5.67
1829	5.67
1830	5.67
1831	5.67
1832	5.67
1833	5.67
1834	5.67
1835	5.67
1836	5.67
1837	5.67
1838	5.67
1839	5.67
1840	5.67
1841	5.67
1842	5.67
1843	5.67
1844	5.67
1845	5.67
1846	5.67
1847	5.67
1848	5.67
1849	5.67
1850	5.67
1851	5.67
1852	5.67
1853	5.67
1854	5.67
1855	5.67
1856	5.67
1857	5.67
1858	5.67
1859	5.67
1860	5.67
1861	5.67
1862	5.67
1863	5.67
1864	5.67
1865	5.67
1866	5.67
1867	5.67
1868	5.67
1869	5.67
1870	5.67
1871	5.67
1872	5.67
1873	5.67
1874	5.67
1875	5.67
1876	5.67
1877	5.67
1878	5.67
1879	5.67
1880	5.67
1881	5.67
1882	5.67
1883	5.67
1884	5.67
1885	5.67
1886	5.67
1887	5.67
1888	5.67
1889	5.67
1890	5.67
1891	5.67
1892	5.67
1893	5.67
1894	5.67
1895	5.67
1896	5.67
1897	5.67
1898	5.67
1899	5.67
1900	5.67
1901	5.67
1902	5.67
1903	5.67
1904	5.67
1905	5.67
1906	5.67
1907	5.67
1908	5.67
1909	5.67
1910	5.67
1911	5.67
1912	5.67
1913	5.67
1914	5.67
1915	5.67
1916	5.67
1917	5.67
1918	5.67
1919	5.67
1920	5.67
1921	5.67
1922	5.67
1923	5.67
1924	5.67
1925	5.67
1926	5.67
1927	5.67
1928	5.67
1929	5.67
1930	5.67
1931	5.67
1932	5.67
1933	5.67
1934	5.67
1935	5.67
1936	5.67
1937	5.68
1938	5.68
1939	5.68
1940	5.69
1941	5.69
1942	5.69
1943	5.7
1944	5.71
1945	5.71
1946	5.72
1947	5.72
1948	5.73
1949	5.74
1950	5.75
1951	5.85
1952	6.03
1953	6.19
1954	6.32
1955	6.44
1956	6.54
1957	6.63
1958	6.7
1959	6.75
1960	6.79
1961	6.8
1962	6.78
1963	6.73
1964	6.63
1965	6.5
1966	6.33
1967	6.13
1968	5.9
1969	5.67
1970	5.46
1971	5.27
1972	5.13
1973	5.03
1974	4.99
1975	4.98
1976	5
1977	5.03
1978	5.06
1979	5.07
1980	5.07
1981	5.05
1982	5.02
1983	4.99
1984	4.95
1985	4.91
1986	4.87
1987	4.83
1988	4.78
1989	4.74
1990	4.69
1991	4.64
1992	4.58
1993	4.51
1994	4.45
1995	4.37
1996	4.3
1997	4.24
1998	4.17
1999	4.11
2000	4.06
2001	4.02
2002	3.98
2003	3.95
2004	3.93
2005	3.91
2006	3.9
2007	3.88
2008	3.87
2009	3.86
2010	3.84
2011	3.82
2012	3.8
2013	3.77
2014	3.73
2015	3.69
2016	3.65
2017	3.61
2018	3.57