Year	Total
1800	5.91
1801	5.91
1802	5.91
1803	5.91
1804	5.91
1805	5.91
1806	5.91
1807	5.91
1808	5.91
1809	5.91
1810	5.91
1811	5.91
1812	5.91
1813	5.91
1814	5.91
1815	5.91
1816	5.91
1817	5.91
1818	5.91
1819	5.91
1820	5.91
1821	5.91
1822	5.91
1823	5.91
1824	5.91
1825	5.91
1826	5.91
1827	5.91
1828	5.91
1829	5.91
1830	5.91
1831	5.91
1832	5.91
1833	5.91
1834	5.91
1835	5.91
1836	5.91
1837	5.91
1838	5.91
1839	5.91
1840	5.91
1841	5.91
1842	5.91
1843	5.91
1844	5.91
1845	5.91
1846	5.91
1847	5.91
1848	5.91
1849	5.91
1850	5.91
1851	5.87
1852	5.83
1853	5.78
1854	5.74
1855	5.7
1856	5.66
1857	5.61
1858	5.57
1859	5.53
1860	5.49
1861	5.44
1862	5.4
1863	5.4
1864	5.39
1865	5.39
1866	5.38
1867	5.38
1868	5.38
1869	5.37
1870	5.37
1871	5.36
1872	5.36
1873	5.35
1874	5.35
1875	5.35
1876	5.34
1877	5.34
1878	5.33
1879	5.33
1880	5.33
1881	5.32
1882	5.32
1883	5.31
1884	5.31
1885	5.3
1886	5.3
1887	5.3
1888	5.29
1889	5.29
1890	5.28
1891	5.28
1892	5.28
1893	5.27
1894	5.27
1895	5.26
1896	5.26
1897	5.25
1898	5.25
1899	5.25
1900	5.24
1901	5.24
1902	5.23
1903	5.23
1904	5.23
1905	5.22
1906	5.22
1907	5.21
1908	5.21
1909	5.2
1910	5.2
1911	5.2
1912	5.19
1913	5.19
1914	5.19
1915	5.18
1916	5.18
1917	5.18
1918	5.17
1919	5.17
1920	5.17
1921	5.16
1922	5.16
1923	5.16
1924	5.15
1925	5.15
1926	5.14
1927	5.14
1928	5.14
1929	5.13
1930	5.13
1931	5.13
1932	5.13
1933	5.14
1934	5.14
1935	5.15
1936	5.15
1937	5.16
1938	5.17
1939	5.17
1940	5.18
1941	5.19
1942	5.19
1943	5.2
1944	5.2
1945	5.21
1946	5.21
1947	5.22
1948	5.22
1949	5.23
1950	5.23
1951	5.13
1952	4.9
1953	4.7
1954	4.51
1955	4.34
1956	4.19
1957	4.07
1958	3.96
1959	3.88
1960	3.8
1961	3.74
1962	3.68
1963	3.6
1964	3.52
1965	3.42
1966	3.31
1967	3.21
1968	3.11
1969	3.02
1970	2.93
1971	2.84
1972	2.76
1973	2.67
1974	2.58
1975	2.49
1976	2.4
1977	2.32
1978	2.24
1979	2.18
1980	2.12
1981	2.08
1982	2.03
1983	2
1984	1.96
1985	1.93
1986	1.9
1987	1.87
1988	1.84
1989	1.8
1990	1.77
1991	1.75
1992	1.73
1993	1.72
1994	1.71
1995	1.71
1996	1.69
1997	1.66
1998	1.62
1999	1.56
2000	1.5
2001	1.43
2002	1.37
2003	1.33
2004	1.3
2005	1.29
2006	1.29
2007	1.29
2008	1.3
2009	1.3
2010	1.31
2011	1.31
2012	1.31
2013	1.32
2014	1.33
2015	1.35
2016	1.36
2017	1.38
2018	1.39