Year	Measure
1800	1009
1801	1009
1802	1009
1803	1009
1804	1009
1805	1009
1806	1009
1807	1009
1808	1009
1809	1009
1810	1009
1811	1009
1812	1009
1813	1009
1814	1009
1815	1009
1816	1009
1817	1009
1818	1009
1819	1009
1820	1009
1821	1013
1822	1017
1823	1021
1824	1026
1825	1030
1826	1034
1827	1038
1828	1043
1829	1047
1830	1051
1831	1055
1832	1060
1833	1064
1834	1068
1835	1073
1836	1077
1837	1082
1838	1086
1839	1091
1840	1095
1841	1100
1842	1104
1843	1109
1844	1113
1845	1118
1846	1122
1847	1127
1848	1131
1849	1136
1850	1141
1851	1145
1852	1150
1853	1155
1854	1160
1855	1164
1856	1169
1857	1174
1858	1179
1859	1184
1860	1188
1861	1193
1862	1198
1863	1203
1864	1208
1865	1213
1866	1218
1867	1223
1868	1228
1869	1233
1870	1238
1871	1243
1872	1248
1873	1253
1874	1258
1875	1264
1876	1269
1877	1274
1878	1279
1879	1284
1880	1290
1881	1295
1882	1300
1883	1306
1884	1311
1885	1316
1886	1322
1887	1327
1888	1333
1889	1338
1890	1344
1891	1349
1892	1355
1893	1360
1894	1366
1895	1371
1896	1377
1897	1383
1898	1388
1899	1394
1900	1400
1901	1406
1902	1411
1903	1417
1904	1423
1905	1429
1906	1435
1907	1440
1908	1446
1909	1452
1910	1458
1911	1464
1912	1470
1913	1476
1914	1482
1915	1488
1916	1494
1917	1501
1918	1507
1919	1513
1920	1519
1921	1525
1922	1532
1923	1538
1924	1544
1925	1551
1926	1557
1927	1563
1928	1570
1929	1576
1930	1583
1931	1589
1932	1596
1933	1602
1934	1609
1935	1615
1936	1622
1937	1629
1938	1635
1939	1642
1940	1649
1941	1655
1942	1662
1943	1669
1944	1676
1945	1683
1946	1690
1947	1697
1948	1704
1949	1711
1950	1718
1951	1757
1952	1797
1953	1839
1954	1881
1955	1924
1956	1968
1957	2014
1958	2060
1959	2107
1960	2156
1961	2205
1962	2256
1963	2308
1964	2361
1965	2415
1966	2470
1967	2527
1968	2585
1969	2644
1970	2705
1971	2902
1972	3128
1973	3412
1974	3649
1975	3787
1976	4174
1977	4474
1978	4899
1979	5044
1980	5028
1981	5024
1982	5037
1983	4964
1984	5096
1985	5332
1986	5843
1987	6436
1988	6680
1989	7160
1990	7596
1991	7880
1992	7933
1993	7776
1994	7975
1995	8168
1996	8365
1997	8702
1998	9841
1999	10590
2000	11260
2001	10820
2002	10880
2003	11530
2004	10770
2005	11870
2006	11370
2007	12020
2008	12100
2009	11250
2010	11170
2011	11220
2012	10980
2013	11110
2014	11200
2015	11300
2016	11460
2017	11650
2018	11900
2019	12160