Year	Total
1800	5.47
1801	5.47
1802	5.47
1803	5.47
1804	5.47
1805	5.47
1806	5.47
1807	5.47
1808	5.47
1809	5.47
1810	5.47
1811	5.47
1812	5.47
1813	5.47
1814	5.47
1815	5.47
1816	5.47
1817	5.47
1818	5.47
1819	5.47
1820	5.47
1821	5.47
1822	5.47
1823	5.47
1824	5.47
1825	5.47
1826	5.47
1827	5.47
1828	5.47
1829	5.47
1830	5.47
1831	5.47
1832	5.47
1833	5.47
1834	5.47
1835	5.47
1836	5.47
1837	5.47
1838	5.47
1839	5.47
1840	5.47
1841	5.47
1842	5.47
1843	5.47
1844	5.47
1845	5.47
1846	5.47
1847	5.47
1848	5.47
1849	5.47
1850	5.47
1851	5.42
1852	5.38
1853	5.33
1854	5.29
1855	5.24
1856	5.19
1857	5.15
1858	5.1
1859	5.06
1860	5.01
1861	4.96
1862	4.93
1863	4.9
1864	4.9
1865	4.91
1866	4.91
1867	4.92
1868	4.92
1869	4.91
1870	4.9
1871	4.9
1872	4.89
1873	4.88
1874	4.89
1875	4.9
1876	4.9
1877	4.91
1878	4.92
1879	4.95
1880	4.98
1881	5
1882	5.03
1883	5.06
1884	5.05
1885	5.04
1886	5.04
1887	5.03
1888	5.02
1889	4.98
1890	4.95
1891	4.91
1892	4.88
1893	4.84
1894	4.79
1895	4.74
1896	4.69
1897	4.64
1898	4.59
1899	4.56
1900	4.53
1901	4.49
1902	4.46
1903	4.43
1904	4.44
1905	4.45
1906	4.45
1907	4.46
1908	4.47
1909	4.43
1910	4.39
1911	4.36
1912	4.32
1913	4.28
1914	4.04
1915	3.8
1916	3.56
1917	3.32
1918	3.08
1919	3.24
1920	3.41
1921	3.57
1922	3.74
1923	3.9
1924	3.81
1925	3.72
1926	3.64
1927	3.55
1928	3.46
1929	3.42
1930	3.38
1931	3.21
1932	3.06
1933	3.04
1934	3
1935	2.98
1936	2.87
1937	2.93
1938	3.05
1939	3.07
1940	3.07
1941	2.74
1942	2.69
1943	2.61
1944	2.39
1945	2.37
1946	3.01
1947	2.9
1948	2.84
1949	2.63
1950	2.45
1951	2.42
1952	2.37
1953	2.32
1954	2.29
1955	2.28
1956	2.28
1957	2.29
1958	2.32
1959	2.35
1960	2.39
1961	2.43
1962	2.47
1963	2.5
1964	2.52
1965	2.53
1966	2.53
1967	2.52
1968	2.5
1969	2.48
1970	2.44
1971	2.4
1972	2.35
1973	2.28
1974	2.2
1975	2.12
1976	2.03
1977	1.94
1978	1.85
1979	1.76
1980	1.69
1981	1.62
1982	1.55
1983	1.5
1984	1.45
1985	1.42
1986	1.38
1987	1.36
1988	1.34
1989	1.32
1990	1.3
1991	1.29
1992	1.27
1993	1.26
1994	1.25
1995	1.24
1996	1.23
1997	1.23
1998	1.23
1999	1.24
2000	1.25
2001	1.27
2002	1.29
2003	1.31
2004	1.34
2005	1.36
2006	1.38
2007	1.4
2008	1.41
2009	1.42
2010	1.43
2011	1.43
2012	1.43
2013	1.44
2014	1.45
2015	1.46
2016	1.47
2017	1.48
2018	1.5