Year	Total
1800	6.93
1801	6.93
1802	6.93
1803	6.93
1804	6.93
1805	6.93
1806	6.93
1807	6.93
1808	6.93
1809	6.93
1810	6.93
1811	6.93
1812	6.93
1813	6.93
1814	6.93
1815	6.93
1816	6.93
1817	6.93
1818	6.93
1819	6.93
1820	6.93
1821	6.93
1822	6.93
1823	6.93
1824	6.93
1825	6.93
1826	6.93
1827	6.93
1828	6.93
1829	6.93
1830	6.93
1831	6.93
1832	6.93
1833	6.93
1834	6.93
1835	6.93
1836	6.93
1837	6.93
1838	6.93
1839	6.93
1840	6.93
1841	6.93
1842	6.93
1843	6.93
1844	6.93
1845	6.93
1846	6.93
1847	6.93
1848	6.93
1849	6.93
1850	6.93
1851	6.93
1852	6.93
1853	6.93
1854	6.93
1855	6.93
1856	6.93
1857	6.93
1858	6.93
1859	6.93
1860	6.93
1861	6.93
1862	6.93
1863	6.93
1864	6.93
1865	6.93
1866	6.93
1867	6.93
1868	6.93
1869	6.93
1870	6.93
1871	6.93
1872	6.93
1873	6.93
1874	6.93
1875	6.93
1876	6.93
1877	6.93
1878	6.93
1879	6.93
1880	6.93
1881	6.93
1882	6.93
1883	6.92
1884	6.92
1885	6.92
1886	6.92
1887	6.91
1888	6.91
1889	6.91
1890	6.91
1891	6.9
1892	6.9
1893	6.92
1894	6.94
1895	6.96
1896	6.98
1897	7.01
1898	7.01
1899	7.02
1900	7.02
1901	7.03
1902	7.04
1903	7.07
1904	7.11
1905	7.15
1906	7.19
1907	7.23
1908	7.25
1909	7.27
1910	7.29
1911	7.31
1912	7.34
1913	7.21
1914	7.08
1915	6.96
1916	6.83
1917	6.71
1918	6.71
1919	6.72
1920	6.72
1921	6.73
1922	6.74
1923	6.77
1924	6.81
1925	6.85
1926	6.89
1927	6.93
1928	6.88
1929	6.83
1930	6.79
1931	6.74
1932	6.69
1933	6.64
1934	6.6
1935	6.55
1936	6.5
1937	6.45
1938	6.53
1939	6.61
1940	6.69
1941	6.71
1942	6.73
1943	6.75
1944	6.77
1945	6.78
1946	6.66
1947	6.53
1948	6.41
1949	6.28
1950	6.15
1951	6.17
1952	6.25
1953	6.33
1954	6.4
1955	6.47
1956	6.51
1957	6.54
1958	6.55
1959	6.52
1960	6.45
1961	6.41
1962	6.32
1963	6.2
1964	6.04
1965	5.85
1966	5.63
1967	5.38
1968	5.12
1969	4.86
1970	4.61
1971	4.39
1972	4.19
1973	4.03
1974	3.9
1975	3.81
1976	3.74
1977	3.7
1978	3.66
1979	3.62
1980	3.59
1981	3.55
1982	3.52
1983	3.48
1984	3.45
1985	3.41
1986	3.37
1987	3.33
1988	3.28
1989	3.23
1990	3.17
1991	3.11
1992	3.04
1993	2.97
1994	2.9
1995	2.82
1996	2.74
1997	2.65
1998	2.56
1999	2.46
2000	2.37
2001	2.29
2002	2.22
2003	2.16
2004	2.11
2005	2.07
2006	2.03
2007	2.01
2008	1.98
2009	1.95
2010	1.92
2011	1.89
2012	1.87
2013	1.84
2014	1.82
2015	1.8
2016	1.78
2017	1.77
2018	1.75