Year	Total
1800	6.16
1801	6.16
1802	6.16
1803	6.16
1804	6.16
1805	6.16
1806	6.16
1807	6.16
1808	6.16
1809	6.16
1810	6.16
1811	6.16
1812	6.16
1813	6.16
1814	6.16
1815	6.16
1816	6.16
1817	6.16
1818	6.16
1819	6.16
1820	6.16
1821	6.16
1822	6.16
1823	6.16
1824	6.16
1825	6.16
1826	6.16
1827	6.16
1828	6.16
1829	6.16
1830	6.16
1831	6.16
1832	6.16
1833	6.16
1834	6.16
1835	6.16
1836	6.16
1837	6.16
1838	6.16
1839	6.16
1840	6.16
1841	6.16
1842	6.16
1843	6.16
1844	6.16
1845	6.16
1846	6.16
1847	6.16
1848	6.16
1849	6.16
1850	6.16
1851	6.16
1852	6.16
1853	6.16
1854	6.16
1855	6.16
1856	6.16
1857	6.16
1858	6.16
1859	6.16
1860	6.16
1861	6.16
1862	6.16
1863	6.16
1864	6.16
1865	6.16
1866	6.16
1867	6.16
1868	6.16
1869	6.16
1870	6.16
1871	6.16
1872	6.16
1873	6.16
1874	6.16
1875	6.16
1876	6.16
1877	6.16
1878	6.16
1879	6.16
1880	6.16
1881	6.16
1882	6.16
1883	6.16
1884	6.16
1885	6.16
1886	6.16
1887	6.16
1888	6.16
1889	6.16
1890	6.16
1891	6.16
1892	6.16
1893	6.16
1894	6.16
1895	6.16
1896	6.16
1897	6.16
1898	6.16
1899	6.16
1900	6.16
1901	6.16
1902	6.16
1903	6.16
1904	6.16
1905	6.16
1906	6.16
1907	6.16
1908	6.16
1909	6.16
1910	6.16
1911	6.16
1912	6.16
1913	6.16
1914	6.16
1915	6.16
1916	6.16
1917	6.16
1918	6.16
1919	6.16
1920	6.16
1921	6.16
1922	6.16
1923	6.16
1924	6.16
1925	6.16
1926	6.16
1927	6.16
1928	6.16
1929	6.16
1930	6.16
1931	6.16
1932	6.16
1933	6.16
1934	6.16
1935	6.16
1936	6.25
1937	6.34
1938	6.43
1939	6.52
1940	6.61
1941	6.7
1942	6.79
1943	6.88
1944	6.97
1945	7.06
1946	7.15
1947	7.24
1948	7.33
1949	7.42
1950	7.51
1951	7.54
1952	7.59
1953	7.63
1954	7.66
1955	7.67
1956	7.68
1957	7.67
1958	7.64
1959	7.61
1960	7.56
1961	7.49
1962	7.4
1963	7.3
1964	7.19
1965	7.05
1966	6.9
1967	6.74
1968	6.56
1969	6.38
1970	6.18
1971	5.98
1972	5.78
1973	5.58
1974	5.38
1975	5.19
1976	5.01
1977	4.85
1978	4.69
1979	4.55
1980	4.42
1981	4.3
1982	4.19
1983	4.08
1984	3.98
1985	3.88
1986	3.78
1987	3.69
1988	3.61
1989	3.54
1990	3.47
1991	3.4
1992	3.33
1993	3.26
1994	3.2
1995	3.13
1996	3.07
1997	3.01
1998	2.97
1999	2.93
2000	2.89
2001	2.86
2002	2.84
2003	2.81
2004	2.78
2005	2.75
2006	2.72
2007	2.69
2008	2.66
2009	2.63
2010	2.6
2011	2.57
2012	2.54
2013	2.51
2014	2.48
2015	2.45
2016	2.42
2017	2.39
2018	2.36