Year	Total
1800	6.39
1801	6.39
1802	6.39
1803	6.39
1804	6.39
1805	6.39
1806	6.39
1807	6.39
1808	6.39
1809	6.39
1810	6.39
1811	6.39
1812	6.39
1813	6.39
1814	6.39
1815	6.39
1816	6.39
1817	6.39
1818	6.39
1819	6.39
1820	6.39
1821	6.39
1822	6.39
1823	6.39
1824	6.39
1825	6.39
1826	6.39
1827	6.39
1828	6.39
1829	6.39
1830	6.39
1831	6.39
1832	6.39
1833	6.39
1834	6.39
1835	6.39
1836	6.39
1837	6.39
1838	6.39
1839	6.39
1840	6.39
1841	6.39
1842	6.39
1843	6.39
1844	6.39
1845	6.39
1846	6.39
1847	6.39
1848	6.39
1849	6.39
1850	6.39
1851	6.39
1852	6.39
1853	6.39
1854	6.39
1855	6.39
1856	6.39
1857	6.39
1858	6.39
1859	6.39
1860	6.39
1861	6.39
1862	6.39
1863	6.39
1864	6.39
1865	6.39
1866	6.39
1867	6.39
1868	6.39
1869	6.39
1870	6.39
1871	6.39
1872	6.39
1873	6.39
1874	6.39
1875	6.39
1876	6.39
1877	6.39
1878	6.39
1879	6.39
1880	6.39
1881	6.39
1882	6.39
1883	6.39
1884	6.39
1885	6.39
1886	6.39
1887	6.39
1888	6.39
1889	6.39
1890	6.39
1891	6.39
1892	6.39
1893	6.39
1894	6.39
1895	6.39
1896	6.39
1897	6.39
1898	6.37
1899	6.34
1900	6.31
1901	6.28
1902	6.25
1903	6.22
1904	6.2
1905	6.17
1906	6.14
1907	6.11
1908	6.08
1909	6.05
1910	6.03
1911	6
1912	5.97
1913	5.94
1914	5.91
1915	5.88
1916	5.86
1917	5.83
1918	5.8
1919	5.77
1920	5.74
1921	5.71
1922	5.69
1923	5.66
1924	5.63
1925	5.6
1926	5.57
1927	5.42
1928	5.26
1929	5.1
1930	4.95
1931	4.79
1932	4.63
1933	4.48
1934	4.32
1935	4.17
1936	4.01
1937	3.85
1938	3.7
1939	3.54
1940	3.38
1941	3.39
1942	3.4
1943	3.41
1944	3.42
1945	3.43
1946	3.44
1947	3.45
1948	3.46
1949	3.47
1950	3.48
1951	3.49
1952	3.5
1953	3.51
1954	3.51
1955	3.5
1956	3.49
1957	3.46
1958	3.43
1959	3.38
1960	3.33
1961	3.26
1962	3.18
1963	3.09
1964	2.99
1965	2.89
1966	2.8
1967	2.72
1968	2.66
1969	2.61
1970	2.58
1971	2.56
1972	2.54
1973	2.52
1974	2.5
1975	2.48
1976	2.47
1977	2.46
1978	2.45
1979	2.46
1980	2.48
1981	2.51
1982	2.55
1983	2.59
1984	2.62
1985	2.64
1986	2.65
1987	2.63
1988	2.58
1989	2.51
1990	2.41
1991	2.31
1992	2.2
1993	2.09
1994	1.99
1995	1.9
1996	1.81
1997	1.72
1998	1.62
1999	1.53
2000	1.44
2001	1.35
2002	1.29
2003	1.25
2004	1.22
2005	1.22
2006	1.23
2007	1.24
2008	1.26
2009	1.27
2010	1.27
2011	1.27
2012	1.27
2013	1.26
2014	1.26
2015	1.25
2016	1.24
2017	1.23
2018	1.23