Year	Total
1800	6.45
1801	6.45
1802	6.45
1803	6.45
1804	6.45
1805	6.45
1806	6.45
1807	6.45
1808	6.45
1809	6.45
1810	6.45
1811	6.45
1812	6.45
1813	6.45
1814	6.45
1815	6.45
1816	6.45
1817	6.45
1818	6.45
1819	6.45
1820	6.45
1821	6.45
1822	6.45
1823	6.45
1824	6.45
1825	6.45
1826	6.45
1827	6.45
1828	6.45
1829	6.45
1830	6.45
1831	6.45
1832	6.45
1833	6.45
1834	6.45
1835	6.45
1836	6.45
1837	6.45
1838	6.45
1839	6.45
1840	6.45
1841	6.45
1842	6.45
1843	6.45
1844	6.45
1845	6.45
1846	6.45
1847	6.45
1848	6.45
1849	6.45
1850	6.45
1851	6.45
1852	6.45
1853	6.45
1854	6.45
1855	6.45
1856	6.45
1857	6.45
1858	6.45
1859	6.45
1860	6.45
1861	6.45
1862	6.45
1863	6.45
1864	6.45
1865	6.45
1866	6.45
1867	6.45
1868	6.45
1869	6.45
1870	6.45
1871	6.45
1872	6.45
1873	6.45
1874	6.45
1875	6.45
1876	6.45
1877	6.45
1878	6.45
1879	6.45
1880	6.45
1881	6.45
1882	6.45
1883	6.45
1884	6.45
1885	6.45
1886	6.45
1887	6.45
1888	6.45
1889	6.45
1890	6.45
1891	6.45
1892	6.45
1893	6.45
1894	6.45
1895	6.45
1896	6.44
1897	6.44
1898	6.43
1899	6.42
1900	6.42
1901	6.41
1902	6.4
1903	6.4
1904	6.39
1905	6.38
1906	6.38
1907	6.37
1908	6.36
1909	6.36
1910	6.35
1911	6.34
1912	6.34
1913	6.33
1914	6.32
1915	6.32
1916	6.31
1917	6.3
1918	6.3
1919	6.29
1920	6.28
1921	6.28
1922	6.27
1923	6.26
1924	6.26
1925	6.25
1926	6.2
1927	6.15
1928	6.1
1929	6.05
1930	6
1931	5.95
1932	5.9
1933	5.85
1934	5.8
1935	5.76
1936	5.71
1937	5.66
1938	5.61
1939	5.56
1940	5.51
1941	5.39
1942	5.27
1943	5.15
1944	5.03
1945	4.91
1946	4.79
1947	4.67
1948	4.54
1949	4.42
1950	4.3
1951	4.33
1952	4.39
1953	4.43
1954	4.48
1955	4.52
1956	4.55
1957	4.57
1958	4.59
1959	4.59
1960	4.56
1961	4.51
1962	4.43
1963	4.32
1964	4.19
1965	4.05
1966	3.91
1967	3.8
1968	3.71
1969	3.65
1970	3.61
1971	3.59
1972	3.57
1973	3.54
1974	3.49
1975	3.43
1976	3.36
1977	3.28
1978	3.22
1979	3.16
1980	3.11
1981	3.09
1982	3.07
1983	3.06
1984	3.06
1985	3.06
1986	3.05
1987	3.02
1988	2.98
1989	2.92
1990	2.83
1991	2.73
1992	2.61
1993	2.48
1994	2.36
1995	2.24
1996	2.13
1997	2.05
1998	1.98
1999	1.94
2000	1.92
2001	1.94
2002	1.99
2003	2.07
2004	2.16
2005	2.26
2006	2.37
2007	2.47
2008	2.55
2009	2.62
2010	2.67
2011	2.7
2012	2.7
2013	2.7
2014	2.68
2015	2.66
2016	2.63
2017	2.6
2018	2.57