Year	Measure
1800	1045
1801	1045
1802	1045
1803	1045
1804	1045
1805	1045
1806	1045
1807	1045
1808	1045
1809	1045
1810	1045
1811	1045
1812	1045
1813	1045
1814	1045
1815	1045
1816	1045
1817	1045
1818	1045
1819	1045
1820	1045
1821	1048
1822	1051
1823	1055
1824	1058
1825	1062
1826	1065
1827	1068
1828	1072
1829	1075
1830	1079
1831	1082
1832	1086
1833	1089
1834	1093
1835	1097
1836	1100
1837	1104
1838	1107
1839	1111
1840	1114
1841	1118
1842	1122
1843	1125
1844	1129
1845	1133
1846	1136
1847	1140
1848	1144
1849	1147
1850	1151
1851	1155
1852	1159
1853	1162
1854	1166
1855	1170
1856	1174
1857	1178
1858	1181
1859	1185
1860	1189
1861	1193
1862	1197
1863	1201
1864	1205
1865	1209
1866	1213
1867	1216
1868	1220
1869	1224
1870	1228
1871	1232
1872	1236
1873	1240
1874	1244
1875	1248
1876	1252
1877	1257
1878	1261
1879	1265
1880	1269
1881	1273
1882	1277
1883	1281
1884	1285
1885	1290
1886	1294
1887	1298
1888	1302
1889	1306
1890	1311
1891	1315
1892	1319
1893	1323
1894	1328
1895	1332
1896	1336
1897	1341
1898	1345
1899	1349
1900	1354
1901	1358
1902	1363
1903	1367
1904	1371
1905	1376
1906	1380
1907	1385
1908	1389
1909	1394
1910	1398
1911	1403
1912	1408
1913	1412
1914	1450
1915	1488
1916	1528
1917	1569
1918	1610
1919	1653
1920	1697
1921	1743
1922	1789
1923	1837
1924	1885
1925	1936
1926	1987
1927	2040
1928	2094
1929	2150
1930	2208
1931	2266
1932	2327
1933	2389
1934	2452
1935	2518
1936	2585
1937	2653
1938	2724
1939	2797
1940	2871
1941	2948
1942	3026
1943	3107
1944	3189
1945	3274
1946	3361
1947	3451
1948	3543
1949	3637
1950	3734
1951	3997
1952	4278
1953	4579
1954	4901
1955	5246
1956	5615
1957	6010
1958	6433
1959	6886
1960	7370
1961	7889
1962	8444
1963	9038
1964	9674
1965	10350
1966	11080
1967	11860
1968	12700
1969	13590
1970	14550
1971	15220
1972	16080
1973	17110
1974	18260
1975	19520
1976	20830
1977	22270
1978	23760
1979	24970
1980	26180
1981	27260
1982	27290
1983	28770
1984	29880
1985	28770
1986	29350
1987	32180
1988	33300
1989	33720
1990	35270
1991	35600
1992	39440
1993	40700
1994	41720
1995	42420
1996	41620
1997	40940
1998	38550
1999	37140
2000	38740
2001	39280
2002	42600
2003	47910
2004	60680
2005	64110
2006	71590
2007	79880
2008	80510
2009	79930
2010	99210
2011	117200
2012	125500
2013	138000