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
1912	396.9
1913	396
1914	395
1915	394.1
1916	390.7
1917	387.3
1918	384
1919	380.6
1920	377.3
1921	374
1922	370.8
1923	367.5
1924	364.3
1925	361.1
1926	357.9
1927	354.8
1928	351.6
1929	348.5
1930	345.4
1931	336.8
1932	329.5
1933	321.2
1934	314.1
1935	306
1936	299.1
1937	291.3
1938	284.6
1939	277
1940	270.6
1950	120.7
1951	117.5
1952	114.5
1953	111.5
1954	108.4
1955	105.4
1956	102.7
1957	99.9
1958	97.2
1959	94.5
1960	91.8
1961	89.2
1962	86.6
1963	84.1
1964	81.7
1965	79.4
1966	77.2
1967	75
1968	72.7
1969	70.3
1970	67.5
1971	64.5
1972	61.5
1973	58.5
1974	55.7
1975	53.3
1976	51.1
1977	49.3
1978	47.6
1979	46.1
1980	44.6
1981	43
1982	41.4
1983	39.8
1984	38.3
1985	36.8
1986	35.5
1987	34.2
1988	33.1
1989	32
1990	31.1
1991	30.3
1992	29.6
1993	29.1
1994	28.6
1995	28.2
1996	27.8
1997	27.4
1998	27
1999	26.5
2000	26
2001	25.3
2002	24.7
2003	24.1
2004	23.4
2005	22.8
2006	22.2
2007	21.5
2008	20.9
2009	20.3
2010	19.7
2011	19.1
2012	18.5
2013	17.9