Year	Years
1800	368
1801	368
1802	368
1803	368
1804	368
1805	368
1806	368
1807	368
1808	368
1809	368
1810	368
1811	368
1812	368
1813	368
1814	368
1815	368
1816	368
1817	368
1818	368
1819	368
1820	368
1821	368
1822	368
1823	368
1824	368
1825	368
1826	368
1827	368
1828	368
1829	368
1830	368
1831	368
1832	368
1833	368
1834	368
1835	368
1836	368
1837	368
1838	368
1839	368
1840	368
1841	368
1842	368
1852	372.2
1853	427.1
1854	428.7
1855	435.2
1856	398
1857	414.1
1858	399.7
1859	404.5
1864	415.7
1865	364.1
1891	420.6
1892	446.6
1893	390
1894	401.3
1895	393.2
1896	367.3
1897	362.5
1898	367.3
1899	339.9
1900	362.5
1901	336.6
1902	356.1
1903	331.8
1904	320.4
1905	377
1906	336.6
1907	344.7
1908	326.9
1909	348
1910	317.1
1911	338.3
1912	464.5
1913	326.9
1914	320.4
1915	428.7
1916	356.1
1917	351.2
1918	352.8
1919	266.8
1920	318.8
1921	313.9
1922	322
1923	299.1
1924	313.9
1925	273.2
1926	271.6
1927	300.8
1928	287.7
1929	291
1930	247.9
1931	263.5
1932	299.1
1933	216.6
1934	238.8
1935	246.1
1936	222.2
1937	211
1938	207.2
1939	188.4
1940	205.3
1941	179.1
1942	211
1943	179.1
1945	274.7
1946	180.9
1947	154.8
1948	138.4
1949	133
1953	81.7
1954	73.2
1955	72.8
1956	71.9
1957	70.1
1958	67.2
1959	63.4
1960	59.4
1961	56.2
1962	54.1
1963	52.5
1964	50.8
1965	49
1966	47.5
1967	46.1
1968	44.9
1969	43.7
1970	42.7
1971	42.3
1972	42.4
1973	42.2
1974	41.1
1975	38.7
1976	35.7
1977	32.5
1978	29.6
1979	27.5
1980	26
1981	25
1982	24.4
1983	24
1984	23.9
1985	23.7
1986	23
1987	21.7
1988	20.4
1989	19.6
1990	19
1991	18.3
1992	17.1
1993	15.9
1994	14.8
1995	13.8
1996	13.1
1997	12.6
1998	12.2
1999	11.7
2000	11.2
2001	10.5
2002	9.9
2003	9.3
2004	8.7
2005	8.3
2006	7.9
2007	7.5
2008	7.2
2009	6.9
2010	6.6
2011	6.4
2012	6.2
2013	6.1