Year	Measure
1800	510
1801	512
1802	514.1
1803	516.1
1804	518.2
1805	520.3
1806	522.3
1807	524.4
1808	526.5
1809	528.6
1810	530.7
1811	532.8
1812	535
1813	537.1
1814	539.3
1815	541.4
1816	543.6
1817	545.7
1818	547.9
1819	550.1
1820	552.3
1821	554.5
1822	556.7
1823	558.9
1824	561.2
1825	563.4
1826	565.7
1827	567.9
1828	570.2
1829	572.5
1830	574.7
1831	577
1832	579.3
1833	581.7
1834	584
1835	586.3
1836	588.7
1837	591
1838	593.4
1839	595.7
1840	598.1
1841	600.5
1842	602.9
1843	605.3
1844	607.7
1845	610.1
1846	612.6
1847	615
1848	617.5
1849	619.9
1850	622.4
1851	624.9
1852	627.4
1853	629.9
1854	632.4
1855	634.9
1856	637.5
1857	640
1858	642.6
1859	645.1
1860	647.7
1861	650.3
1862	652.9
1863	655.5
1864	658.1
1865	660.8
1866	663.4
1867	666
1868	668.7
1869	671.4
1870	674
1871	676.7
1872	679.4
1873	682.1
1874	684.9
1875	687.6
1876	690.4
1877	693.1
1878	695.9
1879	698.7
1880	701.4
1881	704.2
1882	707.1
1883	709.9
1884	712.7
1885	715.6
1886	718.4
1887	721.3
1888	724.2
1889	727
1890	730
1891	732.9
1892	735.8
1893	738.7
1894	741.7
1895	744.6
1896	747.6
1897	750.6
1898	753.6
1899	756.6
1900	759.6
1901	762.7
1902	765.7
1903	768.8
1904	771.8
1905	774.9
1906	778
1907	781.1
1908	784.2
1909	787.4
1910	790.5
1911	793.7
1912	796.8
1913	800
1914	815.5
1915	831.4
1916	847.6
1917	864
1918	880.8
1919	897.9
1920	915.4
1921	933.2
1922	951.3
1923	969.8
1924	988.6
1925	1008
1926	1027
1927	1047
1928	1068
1929	1089
1930	1110
1931	1131
1932	1153
1933	1176
1934	1198
1935	1222
1936	1246
1937	1270
1938	1294
1939	1320
1940	1345
1941	1371
1942	1398
1943	1425
1944	1453
1945	1481
1946	1510
1947	1539
1948	1569
1949	1600
1950	1631
1951	1834
1952	1928
1953	2084
1954	2134
1955	2226
1956	2303
1957	2279
1958	2183
1959	2183
1960	2331
1961	2042
1962	2263
1963	2253
1964	2212
1965	2118
1966	2191
1967	2101
1968	2168
1969	2272
1970	2204
1971	2310
1972	2260
1973	2375
1974	2450
1975	2144
1976	1943
1977	1872
1978	1720
1979	1665
1980	1657
1981	1658
1982	1606
1983	1584
1984	1627
1985	1589
1986	1616
1987	1610
1988	1570
1989	1498
1990	1350
1991	1201
1992	1032
1993	857
1994	793.5
1995	773.4
1996	744.1
1997	687.6
1998	661.3
1999	619.2
2000	562.6
2001	536.1
2002	538.8
2003	553.1
2004	572.3
2005	599
2006	614.6
2007	635
2008	655.7
2009	655.7
2010	684
2011	712
2012	740.8
2013	780.2
2014	823.2
2015	867.5
2016	909.1
2017	946.7
2018	978.8
2019	1003