Year	Measure
1800	803.1
1801	803.9
1802	804.7
1803	805.6
1804	806.4
1805	807.2
1806	808.1
1807	808.9
1808	809.8
1809	810.6
1810	811.5
1811	812.3
1812	813.2
1813	814
1814	814.9
1815	815.7
1816	816.6
1817	817.4
1818	818.3
1819	819.1
1820	820
1821	825.2
1822	830.4
1823	835.6
1824	840.9
1825	846.3
1826	851.6
1827	857
1828	862.4
1829	867.9
1830	873.4
1831	878.9
1832	884.5
1833	890.1
1834	895.7
1835	901.4
1836	907.1
1837	912.9
1838	918.6
1839	924.5
1840	930.3
1841	936.2
1842	942.1
1843	948.1
1844	954.1
1845	960.1
1846	966.2
1847	972.3
1848	978.5
1849	984.7
1850	990.9
1851	997.2
1852	1004
1853	1010
1854	1016
1855	1023
1856	1029
1857	1036
1858	1042
1859	1049
1860	1055
1861	1062
1862	1069
1863	1076
1864	1082
1865	1089
1866	1096
1867	1103
1868	1110
1869	1117
1870	1124
1871	1131
1872	1139
1873	1146
1874	1153
1875	1160
1876	1168
1877	1175
1878	1183
1879	1190
1880	1198
1881	1205
1882	1213
1883	1220
1884	1228
1885	1236
1886	1188
1887	1389
1888	1337
1889	1243
1890	1238
1891	1134
1892	1241
1893	1406
1894	1599
1895	1480
1896	1630
1897	1602
1898	1645
1899	1746
1900	1708
1901	1751
1902	1902
1903	1771
1904	1959
1905	1734
1906	1657
1907	1592
1908	1739
1909	1805
1910	1926
1911	1780
1912	1923
1913	2020
1914	1929
1915	1985
1916	1765
1917	1550
1918	948.8
1919	818
1920	821.3
1921	751.7
1922	872.6
1923	1005
1924	1273
1925	1591
1926	1787
1927	1861
1928	1957
1929	1980
1930	2069
1931	2088
1932	2056
1933	2133
1934	2329
1935	2663
1936	2844
1937	3080
1938	3071
1939	3196
1940	3063
1941	3005
1942	2949
1943	2893
1944	2839
1945	2786
1946	2734
1947	3037
1948	3431
1949	3748
1950	4060
1951	4009
1952	4196
1953	4304
1954	4438
1955	4733
1956	5095
1957	5109
1958	5396
1959	5242
1960	5637
1961	5854
1962	5915
1963	5694
1964	6342
1965	6620
1966	6863
1967	7090
1968	7432
1969	7465
1970	7965
1971	8097
1972	8062
1973	8657
1974	8861
1975	8840
1976	9209
1977	9381
1978	9573
1979	9488
1980	9463
1981	9511
1982	9706
1983	9973
1984	10050
1985	10090
1986	10460
1987	10550
1988	10730
1989	10880
1990	10600
1991	9653
1992	8674
1993	7440
1994	5764
1995	5099
1996	4629
1997	4529
1998	4482
1999	4513
2000	4827
2001	5325
2002	5654
2003	6236
2004	7044
2005	7282
2006	7880
2007	8530
2008	8778
2009	7516
2010	7855
2011	8295
2012	8334
2013	8353