Year	Measure
1820	440.1
1821	442.2
1822	444.3
1823	446.3
1824	448.4
1825	450.5
1826	452.7
1827	454.8
1828	456.9
1829	459.1
1830	461.2
1831	463.4
1832	465.5
1833	467.7
1834	469.9
1835	472.1
1836	474.3
1837	476.6
1838	478.8
1839	481
1840	483.3
1841	485.6
1842	487.8
1843	490.1
1844	492.4
1845	494.7
1846	497.1
1847	499.4
1848	501.7
1849	504.1
1850	506.4
1851	508.8
1852	511.2
1853	513.6
1854	516
1855	518.4
1856	520.9
1857	523.3
1858	525.8
1859	528.2
1860	530.7
1861	533.2
1862	535.7
1863	538.2
1864	540.7
1865	543.3
1866	545.8
1867	548.4
1868	550.9
1869	553.5
1870	556.1
1871	558.7
1872	561.3
1873	564
1874	566.6
1875	569.3
1876	571.9
1877	574.6
1878	577.3
1879	580
1880	582.7
1881	585.5
1882	588.2
1883	591
1884	593.8
1885	596.5
1886	599.3
1887	602.1
1888	605
1889	607.8
1890	610.7
1891	613.5
1892	616.4
1893	619.3
1894	622.2
1895	625.1
1896	628
1897	631
1898	633.9
1899	636.9
1900	639.9
1901	642.9
1902	645.9
1903	648.9
1904	652
1905	655
1906	658.1
1907	661.2
1908	664.3
1909	667.4
1910	670.5
1911	673.7
1912	676.9
1913	680
1914	691.1
1915	702.4
1916	713.9
1917	725.6
1918	737.4
1919	749.5
1920	761.7
1921	774.2
1922	786.8
1923	799.7
1924	812.8
1925	826.1
1926	839.6
1927	853.3
1928	867.2
1929	881.4
1930	895.8
1931	910.4
1932	925.3
1933	940.4
1934	955.8
1935	971.4
1936	987.3
1937	1003
1938	1020
1939	1037
1940	1053
1941	1071
1942	1088
1943	1106
1944	1124
1945	1142
1946	1161
1947	1180
1948	1199
1949	1219
1950	1239
1951	1267
1952	1295
1953	1322
1954	1350
1955	1379
1956	1408
1957	1437
1958	1467
1959	1495
1960	1482
1961	1476
1962	1527
1963	1477
1964	1412
1965	1389
1966	1335
1967	1315
1968	1281
1969	1339
1970	1335
1971	1331
1972	1213
1973	1127
1974	1253
1975	1434
1976	1379
1977	1246
1978	1209
1979	940
1980	883.9
1981	873
1982	876.4
1983	974.2
1984	984.5
1985	1190
1986	1110
1987	1046
1988	1171
1989	1206
1990	1097
1991	1171
1992	1162
1993	1102
1994	1124
1995	1094
1996	1093
1997	1104
1998	1152
1999	1142
2000	1117
2001	1191
2002	1270
2003	1414
2004	1834
2005	1921
2006	1877
2007	1835
2008	1820
2009	1754
2010	1933
2011	1896
2012	2014
2013	2036
2014	2201
2015	2305
2016	2354
2017	2373
2018	2391
2019	2415