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	6.45
1897	6.45
1898	6.45
1899	6.45
1900	6.45
1901	6.39
1902	6.34
1903	6.28
1904	6.23
1905	6.17
1906	6.12
1907	6.06
1908	6.01
1909	5.95
1910	5.89
1911	5.84
1912	5.78
1913	5.73
1914	5.67
1915	5.62
1916	5.56
1917	5.51
1918	5.45
1919	5.39
1920	5.34
1921	5.28
1922	5.23
1923	5.17
1924	5.12
1925	5.06
1926	5.01
1927	4.95
1928	4.89
1929	4.84
1930	4.78
1931	4.81
1932	4.84
1933	4.86
1934	4.89
1935	4.92
1936	4.97
1937	5.02
1938	5.07
1939	5.12
1940	5.17
1941	5.21
1942	5.24
1943	5.28
1944	5.31
1945	5.35
1946	5.54
1947	5.73
1948	5.92
1949	6.11
1950	6.3
1951	6.4
1952	6.59
1953	6.73
1954	6.82
1955	6.87
1956	6.87
1957	6.83
1958	6.74
1959	6.62
1960	6.46
1961	6.28
1962	6.09
1963	5.88
1964	5.68
1965	5.48
1966	5.28
1967	5.08
1968	4.89
1969	4.71
1970	4.54
1971	4.4
1972	4.28
1973	4.18
1974	4.11
1975	4.05
1976	4.02
1977	3.99
1978	3.97
1979	3.94
1980	3.91
1981	3.86
1982	3.81
1983	3.76
1984	3.69
1985	3.63
1986	3.57
1987	3.51
1988	3.47
1989	3.43
1990	3.4
1991	3.37
1992	3.35
1993	3.33
1994	3.31
1995	3.28
1996	3.24
1997	3.21
1998	3.17
1999	3.13
2000	3.09
2001	3.05
2002	3
2003	2.95
2004	2.91
2005	2.86
2006	2.82
2007	2.77
2008	2.74
2009	2.7
2010	2.67
2011	2.64
2012	2.62
2013	2.59
2014	2.57
2015	2.54
2016	2.52
2017	2.49
2018	2.47