Year	Years
1800	406
1801	406
1802	406
1803	406
1804	406
1805	406
1806	406
1807	406
1808	406
1809	406
1810	406
1811	406
1812	406
1813	406
1814	406
1815	406
1816	406
1817	406
1818	406
1819	406
1820	406
1821	406
1822	406
1823	406
1824	406
1825	406
1826	406
1827	406
1828	406
1829	406
1830	406
1831	406
1832	406
1833	406
1834	406
1835	406
1836	406
1837	406
1838	406
1839	406
1840	406
1841	406
1842	406
1843	406
1844	406
1845	406
1846	406
1847	406
1848	406
1849	406
1850	406
1851	406
1852	406
1853	406
1854	406
1855	406
1856	406
1857	406
1858	406
1859	406
1860	406
1861	406
1862	406
1863	406
1864	406
1865	406
1866	406
1867	406
1868	406
1869	406
1870	406
1871	406
1872	406
1873	406
1874	406
1875	406
1876	406
1877	406
1878	406
1879	406
1880	406
1881	406
1882	406
1883	406
1884	406
1885	406
1886	406
1887	406
1888	406
1889	406
1890	406
1891	406
1892	406
1893	406
1894	405.9
1895	405.9
1896	405.9
1897	405.8
1898	405.6
1899	405.4
1900	405.1
1901	404.7
1902	404.3
1903	403.9
1904	403.3
1905	402.7
1906	402
1907	401.3
1908	400.5
1909	399.7
1910	398.8
1911	397.9
1921	162.2
1922	138.4
1923	156.7
1924	164.1
1925	177.2
1926	136.6
1927	160.4
1928	149.3
1929	136.6
1930	149.3
1931	167.8
1932	147.4
1933	136.6
1934	142
1935	152.9
1936	134.8
1937	142
1938	147.4
1939	117.2
1940	124.1
1941	118.9
1942	136.6
1943	110.3
1944	90.4
1946	84.24
1947	98.52
1948	82.73
1949	68.83
1954	58.9
1955	60.7
1956	62.4
1957	63.7
1958	64.6
1959	64.7
1960	63.9
1961	62.5
1962	61
1963	59.7
1964	58.7
1965	58
1966	57.6
1967	57.1
1968	56.3
1969	55.3
1970	54.4
1971	53.7
1972	53.6
1973	54.3
1974	55.1
1975	55.3
1976	54.4
1977	52.1
1978	48.5
1979	44.3
1980	40
1981	36.2
1982	33.3
1983	31.3
1984	29.8
1985	28.6
1986	27.5
1987	26.3
1988	25.1
1989	24
1990	23.1
1991	22.3
1992	21.8
1993	21.4
1994	21.1
1995	20.6
1996	20
1997	19.2
1998	18.3
1999	17.5
2000	16.8
2001	16.3
2002	15.8
2003	15.3
2004	14.8
2005	14.3
2006	13.8
2007	13.3
2008	13
2009	12.7
2010	12.3
2011	12
2012	11.6
2013	11.1