Year	Measure
1800	1105
1801	1105
1802	1105
1803	1105
1804	1105
1805	1105
1806	1105
1807	1105
1808	1105
1809	1105
1810	1105
1811	1105
1812	1105
1813	1105
1814	1105
1815	1105
1816	1105
1817	1105
1818	1105
1819	1105
1820	1105
1821	1118
1822	1132
1823	1146
1824	1160
1825	1174
1826	1188
1827	1203
1828	1217
1829	1232
1830	1247
1831	1262
1832	1278
1833	1293
1834	1309
1835	1325
1836	1341
1837	1358
1838	1374
1839	1391
1840	1408
1841	1425
1842	1442
1843	1460
1844	1478
1845	1496
1846	1514
1847	1532
1848	1551
1849	1570
1850	1589
1851	1608
1852	1628
1853	1648
1854	1668
1855	1688
1856	1709
1857	1729
1858	1750
1859	1772
1860	1793
1861	1815
1862	1837
1863	1860
1864	1882
1865	1905
1866	1928
1867	1952
1868	1976
1869	2000
1870	2024
1871	2049
1872	2074
1873	2099
1874	2125
1875	2150
1876	2177
1877	2203
1878	2230
1879	2257
1880	2285
1881	2312
1882	2341
1883	2369
1884	2398
1885	2427
1886	2457
1887	2487
1888	2517
1889	2548
1890	2579
1891	2610
1892	2642
1893	2674
1894	2707
1895	2740
1896	2773
1897	2807
1898	2841
1899	2876
1900	2911
1901	2946
1902	2982
1903	3018
1904	3055
1905	3092
1906	3130
1907	3168
1908	3207
1909	3246
1910	3285
1911	3325
1912	3366
1913	3407
1914	3448
1915	3490
1916	3533
1917	3576
1918	3619
1919	3663
1920	3708
1921	3753
1922	3799
1923	3845
1924	3892
1925	3939
1926	3987
1927	4036
1928	4085
1929	4135
1930	4185
1931	4236
1932	4288
1933	4340
1934	4393
1935	4446
1936	4500
1937	4555
1938	4611
1939	4667
1940	4724
1941	4781
1942	4839
1943	4898
1944	4958
1945	5018
1946	5080
1947	5141
1948	5204
1949	5267
1950	5332
1951	5807
1952	6107
1953	6076
1954	5918
1955	7277
1956	8661
1957	8821
1958	9479
1959	9981
1960	12540
1961	13400
1962	17280
1963	22670
1964	31110
1965	38700
1966	44370
1967	48020
1968	62190
1969	67640
1970	68850
1971	62940
1972	53750
1973	51820
1974	42240
1975	43730
1976	52370
1977	56150
1978	57070
1979	62360
1980	60530
1981	46270
1982	44850
1983	41020
1984	36050
1985	36470
1986	31120
1987	25460
1988	24270
1989	24890
1990	27400
1991	30970
1992	29450
1993	27730
1994	27680
1995	23770
1996	23950
1997	23380
1998	22900
1999	22620
2000	23080
2001	21750
2002	21130
2003	23520
2004	24180
2005	26160
2006	27250
2007	28410
2008	29010
2009	29190
2010	30260
2011	11360
2012	22890
2013	20430
2014	18560
2015	23740
2016	29360
2017	31740
2018	34390
2019	35060