Year	Total
1800	4.5
1801	4.5
1802	4.5
1803	4.5
1804	4.5
1805	4.5
1806	4.5
1807	4.5
1808	4.5
1809	4.5
1810	4.5
1811	4.5
1812	4.5
1813	4.5
1814	4.5
1815	4.5
1816	4.5
1817	4.5
1818	4.5
1819	4.5
1820	4.5
1821	4.5
1822	4.5
1823	4.5
1824	4.5
1825	4.5
1826	4.5
1827	4.5
1828	4.5
1829	4.5
1830	4.5
1831	4.5
1832	4.5
1833	4.5
1834	4.5
1835	4.5
1836	4.5
1837	4.5
1838	4.5
1839	4.5
1840	4.5
1841	4.5
1842	4.5
1843	4.5
1844	4.5
1845	4.5
1846	4.5
1847	4.5
1848	4.5
1849	4.5
1850	4.5
1851	4.47
1852	4.44
1853	4.41
1854	4.38
1855	4.35
1856	4.33
1857	4.3
1858	4.27
1859	4.24
1860	4.21
1861	4.18
1862	4.15
1863	4.12
1864	4.09
1865	4.1
1866	4.11
1867	4.12
1868	4.14
1869	4.15
1870	4.16
1871	4.17
1872	4.18
1873	4.19
1874	4.2
1875	4.21
1876	4.22
1877	4.23
1878	4.24
1879	4.23
1880	4.22
1881	4.21
1882	4.19
1883	4.18
1884	4.17
1885	4.16
1886	4.15
1887	4.38
1888	4.3
1889	4.38
1890	4.24
1891	4.16
1892	4.06
1893	4.15
1894	3.86
1895	3.9
1896	3.9
1897	3.95
1898	3.93
1899	3.89
1900	3.97
1901	4.07
1902	4.16
1903	4.29
1904	4.11
1905	4.13
1906	4.17
1907	3.99
1908	3.94
1909	3.89
1910	4.12
1911	5.02
1912	4.54
1913	4.23
1914	4.1
1915	4.24
1916	4.17
1917	4.08
1918	3.86
1919	3.59
1920	4.37
1921	4.21
1922	4.3
1923	4.32
1924	4.26
1925	4.24
1926	4.36
1927	4.03
1928	4.15
1929	3.89
1930	3.86
1931	3.86
1932	3.89
1933	3.88
1934	3.74
1935	3.59
1936	3.45
1937	3.39
1938	3.34
1939	3.28
1940	3.22
1941	3.12
1942	3.14
1943	3.27
1944	3.28
1945	3.39
1946	3.29
1947	3.14
1948	3.42
1949	3.23
1950	3.1
1951	3.1
1952	3.1
1953	3.1
1954	3.1
1955	3.1
1956	3.11
1957	3.12
1958	3.13
1959	3.15
1960	3.16
1961	3.18
1962	3.19
1963	3.19
1964	3.19
1965	3.18
1966	3.16
1967	3.13
1968	3.09
1969	3.05
1970	2.99
1971	2.94
1972	2.88
1973	2.83
1974	2.77
1975	2.71
1976	2.65
1977	2.57
1978	2.49
1979	2.39
1980	2.29
1981	2.18
1982	2.07
1983	1.97
1984	1.87
1985	1.78
1986	1.71
1987	1.65
1988	1.6
1989	1.56
1990	1.52
1991	1.5
1992	1.48
1993	1.47
1994	1.46
1995	1.46
1996	1.45
1997	1.45
1998	1.46
1999	1.46
2000	1.46
2001	1.46
2002	1.45
2003	1.44
2004	1.43
2005	1.42
2006	1.4
2007	1.38
2008	1.36
2009	1.34
2010	1.33
2011	1.31
2012	1.29
2013	1.28
2014	1.26
2015	1.25
2016	1.25
2017	1.24
2018	1.24