Year	Years
1800	418.7
1801	418.7
1802	418.7
1803	418.7
1804	418.7
1805	418.7
1806	418.7
1807	418.7
1808	418.7
1809	418.7
1810	418.7
1811	418.7
1812	418.7
1813	418.7
1814	418.7
1815	418.7
1816	418.7
1817	418.7
1818	418.7
1819	418.7
1820	418.7
1821	418.7
1822	418.7
1823	418.7
1824	418.7
1825	418.7
1826	418.7
1827	418.7
1828	418.7
1829	418.7
1830	418.7
1831	418.7
1832	418.7
1833	418.7
1834	418.7
1835	418.7
1836	418.7
1837	418.7
1838	418.7
1839	418.7
1840	418.7
1841	418.7
1842	418.7
1843	418.7
1844	418.7
1845	418.7
1846	418.7
1847	418.7
1848	418.7
1849	418.7
1850	418.7
1851	418.7
1852	418.7
1853	418.7
1854	418.7
1855	418.7
1856	418.7
1857	418.7
1858	418.7
1859	418.7
1860	418.7
1861	418.7
1862	418.7
1863	418.7
1864	418.7
1865	418.7
1866	418.7
1867	418.7
1868	418.7
1869	418.7
1870	418.7
1871	418.7
1872	418.7
1873	418.7
1874	418.7
1875	418.7
1876	418.7
1877	418.7
1878	418.7
1879	418.7
1880	418.7
1881	418.7
1882	418.7
1883	418.7
1884	418.7
1885	418.7
1886	418.7
1887	418.7
1888	418.7
1889	418.7
1890	418.7
1891	418.7
1892	418.7
1893	418.7
1894	418.7
1895	418.7
1896	418.6
1897	418.5
1898	418.4
1899	418.1
1900	417.8
1901	417.5
1902	417.1
1903	416.6
1904	416
1905	415.4
1906	414.7
1907	413.9
1908	413.1
1909	412.2
1910	411.3
1911	410.4
1912	409.4
1913	408.4
1914	407.4
1915	406.5
1916	405.5
1917	404.5
1918	403.5
1919	402.5
1920	401.5
1921	400.6
1922	399.6
1923	398.6
1924	397.6
1925	396.6
1926	395.6
1927	394.7
1928	393.7
1929	392.7
1930	391.7
1931	390.7
1932	389.8
1933	388.8
1934	387.8
1935	386.8
1936	385.8
1937	384.8
1938	383.9
1939	382.9
1940	381.9
1941	371.6
1942	360.4
1943	350.5
1944	339.7
1945	330.3
1946	319.9
1947	310.8
1948	301.9
1949	292.1
1950	283.6
1960	251.5
1978	209.4
1979	205.1
1980	201
1981	197
1982	193.1
1983	189.3
1984	185.5
1985	181.7
1986	177.9
1987	174.1
1988	170.1
1989	166.1
1990	162
1991	157.8
1992	153.4
1993	148.9
1994	144.3
1995	139.6
1996	134.9
1997	130.4
1998	126
1999	121.7
2000	117.4
2001	113.2
2002	108.9
2003	104.8
2004	100.8
2005	97
2006	93.3
2007	89.7
2008	86.2
2009	82.9
2010	79.6
2011	76.7
2012	74
2013	71.4