Year	Total
1800	6.01
1801	6.01
1802	6.01
1803	6.01
1804	6.01
1805	6.01
1806	6.01
1807	6.01
1808	6.01
1809	6.01
1810	6.01
1811	6.01
1812	6.01
1813	6.01
1814	6.01
1815	6.01
1816	6.01
1817	6.01
1818	6.01
1819	6.01
1820	6.01
1821	6.01
1822	6.01
1823	6.01
1824	6.01
1825	6.01
1826	6.01
1827	6.01
1828	6.01
1829	6.01
1830	6.01
1831	6.01
1832	6.01
1833	6.01
1834	6.01
1835	6.01
1836	6.01
1837	6.01
1838	6.01
1839	6.01
1840	6.01
1841	6.01
1842	6.01
1843	6.01
1844	6.01
1845	6.01
1846	6.01
1847	6.01
1848	6.01
1849	6.01
1850	6.01
1851	6.01
1852	6.01
1853	6.01
1854	6.01
1855	6.01
1856	6.01
1857	6.01
1858	6.01
1859	6.01
1860	6.01
1861	6.01
1862	6.01
1863	6.01
1864	6.01
1865	6.01
1866	6.01
1867	6.01
1868	6.01
1869	6.01
1870	6.01
1871	6.01
1872	6.01
1873	6.01
1874	6.01
1875	6.01
1876	6.01
1877	6.01
1878	6.01
1879	6.01
1880	6.01
1881	6.01
1882	6.01
1883	6.01
1884	6.01
1885	6.01
1886	6.01
1887	6.01
1888	6.01
1889	6.01
1890	6.01
1891	6.01
1892	6.01
1893	6.01
1894	6.01
1895	6.01
1896	6.01
1897	6.01
1898	6.01
1899	6.01
1900	6.01
1901	6.01
1902	6.01
1903	6.01
1904	6.01
1905	6.01
1906	6.01
1907	6.01
1908	6.01
1909	6.01
1910	6.01
1911	6.01
1912	6.01
1913	6.01
1914	6.01
1915	6.01
1916	6.01
1917	6.01
1918	6.01
1919	6.01
1920	6.01
1921	6.01
1922	6.01
1923	6.01
1924	6.01
1925	6.01
1926	6
1927	5.98
1928	5.97
1929	5.96
1930	5.95
1931	5.93
1932	5.92
1933	5.91
1934	5.89
1935	5.88
1936	5.87
1937	5.85
1938	5.84
1939	5.83
1940	5.82
1941	5.8
1942	5.79
1943	5.78
1944	5.76
1945	5.75
1946	5.74
1947	5.72
1948	5.71
1949	5.7
1950	5.69
1951	5.77
1952	5.93
1953	6.09
1954	6.22
1955	6.35
1956	6.46
1957	6.56
1958	6.65
1959	6.73
1960	6.79
1961	6.85
1962	6.9
1963	6.94
1964	6.98
1965	7
1966	7.03
1967	7.04
1968	7.06
1969	7.06
1970	7.06
1971	7.06
1972	7.06
1973	7.06
1974	7.05
1975	7.05
1976	7.07
1977	7.08
1978	7.11
1979	7.13
1980	7.13
1981	7.1
1982	7.03
1983	6.92
1984	6.77
1985	6.58
1986	6.36
1987	6.14
1988	5.93
1989	5.74
1990	5.57
1991	5.45
1992	5.36
1993	5.29
1994	5.26
1995	5.25
1996	5.25
1997	5.27
1998	5.29
1999	5.31
2000	5.32
2001	5.31
2002	5.3
2003	5.28
2004	5.25
2005	5.22
2006	5.17
2007	5.11
2008	5.05
2009	4.99
2010	4.92
2011	4.82
2012	4.73
2013	4.64
2014	4.54
2015	4.45
2016	4.35
2017	4.28
2018	4.2