Year	Measure
1764	1390
1765	1390
1766	1390
1767	1390
1768	1390
1769	1390
1770	1390
1771	1390
1772	1390
1773	1390
1774	1390
1775	1390
1776	1390
1777	1390
1778	1390
1779	1389
1780	1389
1781	1389
1782	1389
1783	1389
1784	1389
1785	1389
1786	1389
1787	1389
1788	1389
1789	1389
1790	1389
1791	1389
1792	1389
1793	1389
1794	1389
1795	1389
1796	1389
1797	1388
1798	1388
1799	1388
1800	1388
1801	1394
1802	1400
1803	1406
1804	1412
1805	1417
1806	1423
1807	1429
1808	1435
1809	1441
1810	1447
1811	1453
1812	1459
1813	1465
1814	1471
1815	1477
1816	1483
1817	1490
1818	1496
1819	1502
1820	1508
1821	1605
1822	1489
1823	1484
1824	1451
1825	1461
1826	1507
1827	1518
1828	1425
1829	1505
1830	1478
1831	1468
1832	1576
1833	1575
1834	1557
1835	1639
1836	1671
1837	1692
1838	1729
1839	1703
1840	1833
1841	1782
1842	1748
1843	1815
1844	1870
1845	1938
1846	2061
1847	2248
1848	1755
1849	1752
1850	1841
1851	1810
1852	2049
1853	2280
1854	2559
1855	2700
1856	2804
1857	2709
1858	2530
1859	2537
1860	2704
1861	2763
1862	2865
1863	2947
1864	3001
1865	2952
1866	3079
1867	3036
1868	3249
1869	3053
1870	2952
1871	3095
1872	3265
1873	3227
1874	3368
1875	3306
1876	3271
1877	3264
1878	3087
1879	3061
1880	3252
1881	3467
1882	3592
1883	3443
1884	3269
1885	3179
1886	3144
1887	3176
1888	3257
1889	3274
1890	3401
1891	3445
1892	3525
1893	3399
1894	3737
1895	3668
1896	3792
1897	3689
1898	3914
1899	4060
1900	4120
1901	3924
1902	3883
1903	4018
1904	4105
1905	4215
1906	4163
1907	4506
1908	4498
1909	4648
1910	4432
1911	4875
1912	5270
1913	5216
1914	4367
1915	3838
1916	4392
1917	4344
1918	3716
1919	4091
1920	4364
1921	4139
1922	4953
1923	5175
1924	5731
1925	5758
1926	5943
1927	5809
1928	6140
1929	6648
1930	6405
1931	6109
1932	5562
1933	5716
1934	5506
1935	5361
1936	5427
1937	5543
1938	5395
1939	5609
1940	4419
1941	4268
1942	4290
1943	4272
1944	3266
1945	4012
1946	5348
1947	5625
1948	6298
1949	6626
1950	7104
1951	7436
1952	7551
1953	7692
1954	8019
1955	8400
1956	8786
1957	9242
1958	9435
1959	9620
1960	10240
1961	10690
1962	11190
1963	11580
1964	12200
1965	12650
1966	13190
1967	13680
1968	14150
1969	15000
1970	15700
1971	16280
1972	16840
1973	17600
1974	18000
1975	17850
1976	18510
1977	19000
1978	19520
1979	20100
1980	20330
1981	20490
1982	20930
1983	21270
1984	21490
1985	21810
1986	22220
1987	22610
1988	23520
1989	24190
1990	24680
1991	24850
1992	25140
1993	24730
1994	25120
1995	25560
1996	25720
1997	26170
1998	26960
1999	27690
2000	28640
2001	28980
2002	29040
2003	29050
2004	29510
2005	29640
2006	30160
2007	30650
2008	30460
2009	29350
2010	29690
2011	30040
2012	29900
2013	29740
2014	29860
2015	30160
2016	30550
2017	30970
2018	31420
