Year	Years
1800	498.9
1801	498.9
1802	498.9
1803	498.9
1804	498.9
1805	498.9
1806	498.9
1807	498.9
1808	498.9
1809	498.9
1810	498.9
1811	498.9
1812	498.9
1813	498.9
1814	498.9
1815	498.9
1816	498.9
1817	498.9
1818	498.9
1819	498.9
1820	498.9
1821	498.9
1822	498.9
1823	498.9
1824	498.9
1825	498.9
1826	498.9
1827	498.9
1828	498.9
1829	498.9
1830	498.9
1831	498.9
1832	498.9
1833	498.9
1834	498.9
1835	498.9
1836	498.9
1837	498.9
1838	498.9
1839	498.9
1840	498.9
1841	498.9
1842	498.9
1843	498.9
1844	498.9
1845	498.9
1846	498.9
1847	498.9
1848	498.9
1849	498.9
1850	498.9
1851	498.9
1852	498.9
1853	498.9
1854	498.9
1855	498.9
1856	498.9
1857	498.9
1858	498.9
1859	498.9
1860	498.9
1861	498.9
1862	498.9
1863	498.9
1864	498.9
1865	498.9
1866	498.9
1867	498.9
1868	498.9
1869	498.9
1870	498.9
1871	498.9
1872	498.9
1873	498.9
1874	498.9
1875	498.9
1876	498.9
1877	498.9
1878	498.9
1879	498.9
1880	498.9
1881	498.9
1882	498.9
1883	498.9
1884	498.9
1885	498.9
1886	498.9
1887	498.9
1888	498.9
1889	498.9
1890	498.9
1891	498.9
1892	498.9
1893	498.9
1894	498.9
1895	498.8
1896	498.8
1897	498.6
1898	498.4
1899	498.1
1900	497.8
1901	497.4
1902	496.9
1903	496.3
1904	495.6
1905	494.9
1906	494.1
1907	493.2
1908	492.2
1909	491.1
1910	490.1
1911	488.9
1912	487.8
1913	486.6
1914	485.4
1915	484.2
1916	483.1
1917	481.9
1918	480.7
1919	479.6
1920	478.4
1921	477.2
1922	476.1
1923	474.9
1924	473.7
1925	472.5
1926	457.6
1927	443
1928	428.8
1929	414.9
1930	401.5
1931	388.3
1932	375.5
1933	363
1934	350.8
1935	338.9
1936	327.2
1937	315.8
1938	304.7
1939	293.8
1940	283.1
1950	120
1951	114.9
1952	109.5
1953	104.1
1954	98.7
1955	93.6
1956	88.6
1957	84
1958	79.7
1959	75.9
1960	72.5
1961	69.4
1962	66.7
1963	64.4
1964	62.3
1965	60.5
1966	59
1967	57.7
1968	56.7
1969	55.9
1970	55.3
1971	54.9
1972	54.4
1973	54
1974	53.4
1975	52.5
1976	51.3
1977	49.8
1978	48
1979	46
1980	44
1981	42
1982	40.2
1983	38.4
1984	36.9
1985	35.6
1986	34.3
1987	33.1
1988	32
1989	31
1990	30
1991	29
1992	28.1
1993	27.4
1994	26.8
1995	26.4
1996	25.9
1997	25.5
1998	25.1
1999	24.8
2000	24.4
2001	24
2002	23.6
2003	23.3
2004	23.1
2005	23
2006	23.1
2007	23.2
2008	23.4
2009	23.6
2010	23.7
2011	23.8
2012	23.8
2013	23.6