Year	Total
1800	6.19
1801	6.19
1802	6.19
1803	6.19
1804	6.19
1805	6.19
1806	6.19
1807	6.19
1808	6.19
1809	6.19
1810	6.19
1811	6.19
1812	6.19
1813	6.19
1814	6.19
1815	6.19
1816	6.19
1817	6.19
1818	6.19
1819	6.19
1820	6.19
1821	6.19
1822	6.19
1823	6.19
1824	6.19
1825	6.19
1826	6.19
1827	6.19
1828	6.19
1829	6.19
1830	6.19
1831	6.19
1832	6.19
1833	6.19
1834	6.19
1835	6.19
1836	6.19
1837	6.19
1838	6.19
1839	6.19
1840	6.19
1841	6.19
1842	6.19
1843	6.19
1844	6.19
1845	6.19
1846	6.19
1847	6.19
1848	6.19
1849	6.19
1850	6.19
1851	6.19
1852	6.19
1853	6.19
1854	6.19
1855	6.19
1856	6.19
1857	6.19
1858	6.19
1859	6.19
1860	6.19
1861	6.19
1862	6.19
1863	6.19
1864	6.19
1865	6.19
1866	6.19
1867	6.19
1868	6.19
1869	6.19
1870	6.19
1871	6.19
1872	6.19
1873	6.19
1874	6.19
1875	6.19
1876	6.19
1877	6.19
1878	6.19
1879	6.19
1880	6.19
1881	6.19
1882	6.19
1883	6.19
1884	6.19
1885	6.19
1886	6.19
1887	6.19
1888	6.19
1889	6.19
1890	6.19
1891	6.19
1892	6.19
1893	6.19
1894	6.19
1895	6.19
1896	6.19
1897	6.19
1898	6.19
1899	6.19
1900	6.19
1901	6.19
1902	6.19
1903	6.19
1904	6.19
1905	6.19
1906	6.19
1907	6.19
1908	6.19
1909	6.19
1910	6.19
1911	6.19
1912	6.19
1913	6.19
1914	6.19
1915	6.19
1916	6.19
1917	6.19
1918	6.19
1919	6.19
1920	6.19
1921	6.19
1922	6.19
1923	6.19
1924	6.19
1925	6.19
1926	6.19
1927	6.19
1928	6.2
1929	6.2
1930	6.2
1931	6.2
1932	6.21
1933	6.21
1934	6.21
1935	6.21
1936	6.22
1937	6.22
1938	6.22
1939	6.22
1940	6.23
1941	6.23
1942	6.23
1943	6.23
1944	6.24
1945	6.24
1946	6.24
1947	6.24
1948	6.25
1949	6.25
1950	6.25
1951	6.26
1952	6.26
1953	6.28
1954	6.29
1955	6.3
1956	6.32
1957	6.34
1958	6.36
1959	6.38
1960	6.41
1961	6.43
1962	6.45
1963	6.48
1964	6.5
1965	6.52
1966	6.55
1967	6.58
1968	6.62
1969	6.66
1970	6.7
1971	6.74
1972	6.78
1973	6.82
1974	6.85
1975	6.88
1976	6.91
1977	6.93
1978	6.95
1979	6.96
1980	6.97
1981	6.97
1982	6.96
1983	6.95
1984	6.92
1985	6.88
1986	6.82
1987	6.75
1988	6.67
1989	6.59
1990	6.5
1991	6.41
1992	6.34
1993	6.27
1994	6.21
1995	6.16
1996	6.11
1997	6.06
1998	6.01
1999	5.95
2000	5.88
2001	5.8
2002	5.72
2003	5.64
2004	5.55
2005	5.46
2006	5.37
2007	5.28
2008	5.19
2009	5.11
2010	5.02
2011	4.94
2012	4.87
2013	4.79
2014	4.72
2015	4.65
2016	4.58
2017	4.51
2018	4.45