Year	Years
1800	420
1801	420
1802	420
1803	420
1804	420
1805	420
1806	414.9
1807	409.8
1808	404.7
1809	399.7
1810	394.7
1811	389.8
1812	384.9
1813	380
1814	375.2
1815	370.4
1816	368
1817	364.5
1818	362.1
1819	358.6
1820	355.1
1821	352.8
1822	349.4
1823	347.1
1824	343.6
1825	340.2
1826	344.8
1827	349.4
1828	354
1829	357.4
1830	362.1
1831	366.8
1832	371.6
1833	375.2
1834	380
1835	384.9
1836	377.6
1837	370.4
1838	364.5
1839	357.4
1840	350.5
1841	343.6
1842	336.9
1843	331.3
1844	324.6
1845	318
1846	323.5
1847	330.1
1848	335.7
1849	341.4
1850	348.2
1851	354
1852	359.8
1853	366.8
1854	372.8
1855	378.8
1856	382.4
1866	354.4
1867	362.5
1868	636.6
1869	225.9
1870	218.5
1871	225.9
1872	281.1
1873	299.1
1874	294.2
1875	277.8
1876	265.2
1877	261.9
1878	311.1
1879	240.9
1880	288.1
1881	319.2
1882	298.7
1883	263
1884	264.8
1885	288.1
1886	287.7
1887	225.9
1888	231.8
1889	234.5
1890	238.4
1891	269.4
1892	293.8
1893	241.3
1894	228.8
1895	202.5
1896	216
1897	199.6
1898	208
1899	241
1900	269.6
1901	256.3
1902	214.8
1903	212.3
1904	201.3
1905	216.2
1906	205
1907	194.6
1908	207.3
1909	185
1910	191.2
1911	182.9
1912	173.5
1913	175.2
1914	166.8
1915	167.9
1916	176.7
1917	191.8
1918	214.5
1919	225
1920	180.4
1921	140.2
1922	145.4
1923	144.8
1924	157.3
1925	121.7
1926	120.1
1927	139.5
1928	122.2
1929	138.6
1930	106.4
1931	102.8
1932	100.1
1933	106.6
1934	107.7
1935	94.3
1936	93.77
1937	95.45
1938	93.4
1939	99.49
1940	114.5
1941	91.25
1942	75.67
1943	79.01
1944	103.5
1945	98.66
1946	75.67
1947	75.48
1948	64.35
1949	57.57
1950	50.96
1951	42
1952	40.5
1953	38.9
1954	37.3
1955	35.7
1956	34
1957	32.3
1958	30.4
1959	28.6
1960	26.8
1961	25.2
1962	23.8
1963	22.5
1964	21.3
1965	20.2
1966	19.2
1967	18.4
1968	17.6
1969	16.8
1970	16.1
1971	15.4
1972	14.6
1973	13.8
1974	13.1
1975	12.3
1976	11.4
1977	10.6
1978	9.9
1979	9.2
1980	8.7
1981	8.2
1982	7.9
1983	7.6
1984	7.4
1985	7.3
1986	7.3
1987	7.2
1988	7.1
1989	6.9
1990	6.7
1991	6.4
1992	6.1
1993	5.8
1994	5.5
1995	5.2
1996	4.9
1997	4.7
1998	4.6
1999	4.4
2000	4.3
2001	4.2
2002	4.1
2003	4
2004	3.9
2005	3.8
2006	3.6
2007	3.5
2008	3.3
2009	3.2
2010	3
2011	2.9
2012	2.7
2013	2.6