Year	Measure
1764	1532
1765	1533
1766	1533
1767	1534
1768	1535
1769	1535
1770	1536
1771	1536
1772	1537
1773	1538
1774	1538
1775	1539
1776	1539
1777	1540
1778	1541
1779	1541
1780	1542
1781	1542
1782	1543
1783	1544
1784	1544
1785	1545
1786	1546
1787	1546
1788	1547
1789	1547
1790	1548
1791	1549
1792	1549
1793	1550
1794	1550
1795	1551
1796	1552
1797	1552
1798	1553
1799	1553
1800	1554
1801	1555
1802	1555
1803	1556
1804	1556
1805	1557
1806	1558
1807	1558
1808	1559
1809	1559
1810	1560
1811	1561
1812	1561
1813	1562
1814	1563
1815	1563
1816	1564
1817	1564
1818	1565
1819	1566
1820	1566
1821	1570
1822	1575
1823	1579
1824	1583
1825	1587
1826	1591
1827	1595
1828	1600
1829	1604
1830	1608
1831	1631
1832	1654
1833	1677
1834	1701
1835	1725
1836	1749
1837	1774
1838	1799
1839	1824
1840	1850
1841	1876
1842	1902
1843	1929
1844	1956
1845	1984
1846	2012
1847	2093
1848	2083
1849	2127
1850	2195
1851	2241
1852	2287
1853	2332
1854	2461
1855	2463
1856	2581
1857	2631
1858	2631
1859	2614
1860	2728
1861	2749
1862	2802
1863	2862
1864	2936
1865	2915
1866	2980
1867	2974
1868	3060
1869	3171
1870	3206
1871	3195
1872	3365
1873	3361
1874	3444
1875	3409
1876	3426
1877	3438
1878	3507
1879	3511
1880	3655
1881	3661
1882	3741
1883	3751
1884	3741
1885	3743
1886	3762
1887	3878
1888	3874
1889	4032
1890	4092
1891	4052
1892	4108
1893	4125
1894	4140
1895	4192
1896	4241
1897	4283
1898	4317
1899	4367
1900	4457
1901	4443
1902	4467
1903	4507
1904	4566
1905	4639
1906	4682
1907	4700
1908	4701
1909	4747
1910	4858
1911	4960
1912	5030
1913	5046
1914	3696
1915	3028
1916	3389
1917	2822
1918	2636
1919	3249
1920	4907
1921	5167
1922	5514
1923	5865
1924	6124
1925	6131
1926	6209
1927	6183
1928	6599
1929	6763
1930	6865
1931	6615
1932	6292
1933	6216
1934	6064
1935	6335
1936	6530
1937	6834
1938	6698
1939	6424
1940	5273
1941	4502
1942	4618
1943	3741
1944	3794
1945	4049
1946	6372
1947	7176
1948	7533
1949	7749
1950	7990
1951	8393
1952	8343
1953	8645
1954	8950
1955	9245
1956	9529
1957	9715
1958	9477
1959	9675
1960	10080
1961	10510
1962	10990
1963	11400
1964	12090
1965	12410
1966	12720
1967	13150
1968	13650
1969	14520
1970	15380
1971	15900
1972	16670
1973	17640
1974	18330
1975	18030
1976	19020
1977	19120
1978	19650
1979	20090
1980	20970
1981	20700
1982	20980
1983	20980
1984	21500
1985	21710
1986	22020
1987	22530
1988	23560
1989	24270
1990	24930
1991	25290
1992	25580
1993	25230
1994	25950
1995	26480
1996	26730
1997	27560
1998	28030
1999	28940
2000	29940
2001	30090
2002	30490
2003	30740
2004	31600
2005	32080
2006	32730
2007	33440
2008	33510
2009	32320
2010	32830
2011	32930
2012	32590
2013	32400
2014	32550
2015	32720
2016	32910
2017	33130
2018	33370
