Year	Total
1800	6.26
1801	6.26
1802	6.26
1803	6.26
1804	6.26
1805	6.26
1806	6.26
1807	6.26
1808	6.26
1809	6.26
1810	6.26
1811	6.26
1812	6.26
1813	6.26
1814	6.26
1815	6.26
1816	6.26
1817	6.26
1818	6.26
1819	6.26
1820	6.26
1821	6.26
1822	6.26
1823	6.26
1824	6.26
1825	6.26
1826	6.26
1827	6.26
1828	6.26
1829	6.26
1830	6.26
1831	6.26
1832	6.26
1833	6.26
1834	6.26
1835	6.26
1836	6.26
1837	6.26
1838	6.26
1839	6.26
1840	6.26
1841	6.26
1842	6.26
1843	6.26
1844	6.26
1845	6.26
1846	6.26
1847	6.26
1848	6.26
1849	6.26
1850	6.26
1851	6.26
1852	6.26
1853	6.26
1854	6.26
1855	6.26
1856	6.26
1857	6.26
1858	6.26
1859	6.26
1860	6.26
1861	6.26
1862	6.26
1863	6.26
1864	6.26
1865	6.26
1866	6.26
1867	6.26
1868	6.26
1869	6.26
1870	6.26
1871	6.26
1872	6.26
1873	6.26
1874	6.26
1875	6.26
1876	6.27
1877	6.27
1878	6.28
1879	6.29
1880	6.29
1881	6.3
1882	6.29
1883	6.28
1884	6.27
1885	6.26
1886	6.25
1887	6.24
1888	6.23
1889	6.22
1890	6.21
1891	6.2
1892	6.19
1893	6.18
1894	6.17
1895	6.16
1896	6.11
1897	6.05
1898	5.99
1899	5.93
1900	5.88
1901	5.82
1902	5.76
1903	5.78
1904	5.8
1905	5.81
1906	5.83
1907	5.85
1908	5.86
1909	5.88
1910	5.9
1911	5.9
1912	5.9
1913	5.9
1914	5.9
1915	5.9
1916	5.9
1917	5.9
1918	5.9
1919	5.9
1920	5.9
1921	5.9
1922	5.9
1923	5.9
1924	5.9
1925	5.9
1926	5.9
1927	5.9
1928	5.9
1929	5.9
1930	5.9
1931	5.9
1932	5.9
1933	5.9
1934	5.9
1935	5.9
1936	5.9
1937	5.9
1938	5.9
1939	5.9
1940	5.9
1941	5.92
1942	5.95
1943	5.98
1944	6.01
1945	6.04
1946	6.07
1947	6.09
1948	6.12
1949	6.15
1950	6.18
1951	6.17
1952	6.15
1953	6.14
1954	6.14
1955	6.14
1956	6.16
1957	6.18
1958	6.2
1959	6.21
1960	6.21
1961	6.19
1962	6.14
1963	6.06
1964	5.95
1965	5.82
1966	5.66
1967	5.49
1968	5.33
1969	5.17
1970	5.02
1971	4.9
1972	4.78
1973	4.68
1974	4.59
1975	4.5
1976	4.42
1977	4.34
1978	4.26
1979	4.17
1980	4.07
1981	3.97
1982	3.85
1983	3.72
1984	3.59
1985	3.45
1986	3.31
1987	3.17
1988	3.04
1989	2.92
1990	2.81
1991	2.72
1992	2.64
1993	2.58
1994	2.54
1995	2.5
1996	2.49
1997	2.46
1998	2.43
1999	2.37
2000	2.3
2001	2.23
2002	2.16
2003	2.1
2004	2.03
2005	1.98
2006	1.93
2007	1.88
2008	1.85
2009	1.82
2010	1.81
2011	1.79
2012	1.78
2013	1.77
2014	1.75
2015	1.74
2016	1.73
2017	1.71
2018	1.7