Year	Measure
1800	876.5
1801	876.5
1802	876.5
1803	876.5
1804	876.5
1805	876.5
1806	876.5
1807	876.5
1808	876.5
1809	876.5
1810	876.5
1811	876.5
1812	876.5
1813	876.5
1814	876.5
1815	876.5
1816	876.5
1817	876.5
1818	876.5
1819	876.5
1820	876.5
1821	882.3
1822	888.2
1823	894
1824	899.9
1825	905.9
1826	911.9
1827	917.9
1828	924
1829	930.1
1830	936.2
1831	942.4
1832	948.6
1833	954.9
1834	961.2
1835	967.6
1836	974
1837	980.4
1838	986.9
1839	993.4
1840	1000
1841	1007
1842	1013
1843	1020
1844	1027
1845	1033
1846	1040
1847	1047
1848	1054
1849	1061
1850	1068
1851	1075
1852	1082
1853	1089
1854	1097
1855	1104
1856	1111
1857	1118
1858	1126
1859	1133
1860	1141
1861	1148
1862	1156
1863	1164
1864	1171
1865	1179
1866	1187
1867	1195
1868	1202
1869	1210
1870	1218
1871	1226
1872	1235
1873	1243
1874	1251
1875	1259
1876	1268
1877	1276
1878	1284
1879	1293
1880	1301
1881	1310
1882	1319
1883	1327
1884	1336
1885	1345
1886	1354
1887	1363
1888	1372
1889	1381
1890	1390
1891	1399
1892	1408
1893	1418
1894	1427
1895	1436
1896	1446
1897	1456
1898	1465
1899	1475
1900	1485
1901	1494
1902	1504
1903	1514
1904	1524
1905	1534
1906	1544
1907	1555
1908	1565
1909	1575
1910	1586
1911	1596
1912	1607
1913	1617
1914	1657
1915	1698
1916	1739
1917	1782
1918	1825
1919	1870
1920	1916
1921	1963
1922	2011
1923	2060
1924	2111
1925	2163
1926	2216
1927	2270
1928	2325
1929	2382
1930	2441
1931	2501
1932	2562
1933	2625
1934	2689
1935	2755
1936	2823
1937	2892
1938	2963
1939	3035
1940	3110
1941	3186
1942	3264
1943	3344
1944	3426
1945	3510
1946	3596
1947	3684
1948	3774
1949	3867
1950	3961
1951	4059
1952	4158
1953	4260
1954	4364
1955	4471
1956	4581
1957	4693
1958	4808
1959	4926
1960	5047
1961	5170
1962	5297
1963	5427
1964	5560
1965	5696
1966	5836
1967	5979
1968	6125
1969	6276
1970	6429
1971	6953
1972	7519
1973	8135
1974	8807
1975	9544
1976	10360
1977	11250
1978	12220
1979	13250
1980	14320
1981	15420
1982	16550
1983	17770
1984	19160
1985	20820
1986	22860
1987	26900
1988	32350
1989	36300
1990	37010
1991	38310
1992	38240
1993	38480
1994	39320
1995	38600
1996	38000
1997	40310
1998	42570
1999	42560
2000	43700
2001	42450
2002	40290
2003	39250
2004	41060
2005	40740
2006	40210
2007	40560
2008	38590
2009	35570
2010	33290
2011	36020
2012	35420
2013	36080