Year	Total
1800	6.98
1801	6.98
1802	6.98
1803	6.98
1804	6.98
1805	6.98
1806	6.98
1807	6.98
1808	6.98
1809	6.98
1810	6.98
1811	6.98
1812	6.98
1813	6.98
1814	6.98
1815	6.98
1816	6.98
1817	6.98
1818	6.99
1819	6.99
1820	6.99
1821	6.99
1822	6.99
1823	6.99
1824	6.99
1825	6.99
1826	6.99
1827	6.99
1828	6.99
1829	6.99
1830	6.99
1831	6.99
1832	6.99
1833	6.99
1834	6.99
1835	6.99
1836	6.99
1837	6.99
1838	6.99
1839	6.99
1840	6.99
1841	6.99
1842	6.99
1843	6.99
1844	6.99
1845	6.99
1846	6.99
1847	6.99
1848	6.99
1849	6.99
1850	6.99
1851	6.99
1852	6.99
1853	6.99
1854	7
1855	7
1856	7
1857	7
1858	7
1859	7
1860	7
1861	7
1862	7
1863	7
1864	7
1865	7
1866	7
1867	7
1868	7
1869	7
1870	7
1871	7
1872	7
1873	7
1874	7
1875	7
1876	7
1877	7
1878	7
1879	7
1880	7
1881	7
1882	7
1883	7
1884	7
1885	7
1886	7
1887	7
1888	7
1889	7
1890	7.01
1891	7.01
1892	7.01
1893	7.01
1894	7.01
1895	7.01
1896	7.01
1897	7.01
1898	7.01
1899	7.01
1900	7.01
1901	7
1902	6.98
1903	6.97
1904	6.96
1905	6.94
1906	6.93
1907	6.92
1908	6.9
1909	6.89
1910	6.88
1911	6.87
1912	6.85
1913	6.84
1914	6.83
1915	6.81
1916	6.8
1917	6.79
1918	6.82
1919	6.86
1920	6.89
1921	6.93
1922	6.96
1923	7.01
1924	7.05
1925	7.09
1926	7.13
1927	7.17
1928	7.15
1929	7.13
1930	7.12
1931	7.1
1932	7.08
1933	7.06
1934	7.03
1935	7.01
1936	6.99
1937	6.97
1938	6.92
1939	6.87
1940	6.82
1941	6.77
1942	6.72
1943	6.72
1944	6.72
1945	6.72
1946	6.72
1947	6.71
1948	6.71
1949	6.71
1950	6.7
1951	6.71
1952	6.73
1953	6.74
1954	6.75
1955	6.75
1956	6.75
1957	6.75
1958	6.75
1959	6.73
1960	6.72
1961	6.7
1962	6.68
1963	6.65
1964	6.61
1965	6.56
1966	6.51
1967	6.44
1968	6.35
1969	6.25
1970	6.14
1971	6.01
1972	5.87
1973	5.73
1974	5.58
1975	5.43
1976	5.28
1977	5.13
1978	4.99
1979	4.85
1980	4.73
1981	4.61
1982	4.5
1983	4.4
1984	4.31
1985	4.21
1986	4.12
1987	4.03
1988	3.95
1989	3.86
1990	3.77
1991	3.68
1992	3.59
1993	3.51
1994	3.44
1995	3.36
1996	3.29
1997	3.23
1998	3.16
1999	3.09
2000	3.03
2001	2.97
2002	2.91
2003	2.87
2004	2.83
2005	2.79
2006	2.76
2007	2.74
2008	2.71
2009	2.68
2010	2.66
2011	2.63
2012	2.6
2013	2.57
2014	2.54
2015	2.51
2016	2.49
2017	2.46
2018	2.43