Year	Total
1800	6.06
1801	6.06
1802	6.06
1803	6.06
1804	6.06
1805	6.06
1806	6.06
1807	6.06
1808	6.06
1809	6.06
1810	6.06
1811	6.06
1812	6.06
1813	6.06
1814	6.06
1815	6.05
1816	6.05
1817	6.05
1818	6.05
1819	6.05
1820	6.05
1821	6.05
1822	6.05
1823	6.05
1824	6.05
1825	6.05
1826	6.05
1827	6.05
1828	6.05
1829	6.05
1830	6.05
1831	6.05
1832	6.05
1833	6.05
1834	6.05
1835	6.05
1836	6.05
1837	6.05
1838	6.05
1839	6.05
1840	6.05
1841	6.05
1842	6.05
1843	6.05
1844	6.05
1845	6.04
1846	6.04
1847	6.04
1848	6.04
1849	6.04
1850	6.04
1851	6.04
1852	6.04
1853	6.04
1854	6.04
1855	6.04
1856	6.04
1857	6.04
1858	6.04
1859	6.04
1860	6.04
1861	6.04
1862	6.04
1863	6.04
1864	6.04
1865	6.04
1866	6.04
1867	6.04
1868	6.04
1869	6.04
1870	6.04
1871	6.04
1872	6.04
1873	6.04
1874	6.04
1875	6.03
1876	6.03
1877	6.03
1878	6.03
1879	6.03
1880	6.03
1881	6.03
1882	6.03
1883	6.03
1884	6.03
1885	6.03
1886	6.03
1887	6.03
1888	6.03
1889	6.03
1890	6.03
1891	6.03
1892	6.03
1893	6.03
1894	6.03
1895	6.03
1896	6.03
1897	6.03
1898	6.03
1899	6.03
1900	6.03
1901	6.03
1902	6.03
1903	6.03
1904	6.03
1905	6.02
1906	6.02
1907	6.02
1908	6.02
1909	6.02
1910	6.02
1911	6.02
1912	6.02
1913	5.99
1914	5.97
1915	5.94
1916	5.97
1917	5.99
1918	6.02
1919	6.05
1920	6.08
1921	6.08
1922	6.07
1923	6.07
1924	6.07
1925	6.07
1926	6.15
1927	6.24
1928	6.33
1929	6.42
1930	6.51
1931	6.4
1932	6.29
1933	6.18
1934	6.08
1935	5.97
1936	5.95
1937	5.93
1938	5.91
1939	5.9
1940	5.88
1941	5.92
1942	5.97
1943	6.01
1944	6.05
1945	6.1
1946	6.21
1947	6.32
1948	6.43
1949	6.54
1950	6.65
1951	6.66
1952	6.69
1953	6.71
1954	6.72
1955	6.73
1956	6.74
1957	6.74
1958	6.74
1959	6.73
1960	6.72
1961	6.7
1962	6.67
1963	6.65
1964	6.62
1965	6.58
1966	6.53
1967	6.47
1968	6.4
1969	6.32
1970	6.23
1971	6.14
1972	6.06
1973	5.97
1974	5.9
1975	5.83
1976	5.78
1977	5.73
1978	5.68
1979	5.64
1980	5.6
1981	5.56
1982	5.53
1983	5.49
1984	5.44
1985	5.38
1986	5.29
1987	5.18
1988	5.03
1989	4.86
1990	4.66
1991	4.46
1992	4.25
1993	4.05
1994	3.87
1995	3.71
1996	3.57
1997	3.46
1998	3.37
1999	3.29
2000	3.23
2001	3.18
2002	3.13
2003	3.09
2004	3.05
2005	3.02
2006	3
2007	3.02
2008	3.06
2009	3.11
2010	3.19
2011	3.25
2012	3.31
2013	3.34
2014	3.34
2015	3.31
2016	3.27
2017	3.21
2018	3.15