Year	Measure
1800	1300
1801	1305
1802	1311
1803	1316
1804	1322
1805	1327
1806	1333
1807	1338
1808	1344
1809	1350
1810	1355
1811	1361
1812	1366
1813	1372
1814	1378
1815	1384
1816	1389
1817	1395
1818	1401
1819	1407
1820	1413
1821	1418
1822	1424
1823	1430
1824	1436
1825	1442
1826	1448
1827	1454
1828	1460
1829	1466
1830	1472
1831	1479
1832	1485
1833	1491
1834	1497
1835	1503
1836	1510
1837	1516
1838	1522
1839	1529
1840	1535
1841	1541
1842	1548
1843	1554
1844	1561
1845	1567
1846	1574
1847	1580
1848	1587
1849	1593
1850	1600
1851	1618
1852	1636
1853	1655
1854	1673
1855	1692
1856	1711
1857	1730
1858	1750
1859	1770
1860	1789
1861	1810
1862	1830
1863	1851
1864	1871
1865	1892
1866	1914
1867	1935
1868	1957
1869	1979
1870	2001
1871	2024
1872	2047
1873	2070
1874	2093
1875	2117
1876	2140
1877	2165
1878	2189
1879	2214
1880	2238
1881	2264
1882	2289
1883	2315
1884	2341
1885	2367
1886	2394
1887	2421
1888	2448
1889	2476
1890	2504
1891	2532
1892	2560
1893	2589
1894	2618
1895	2648
1896	2677
1897	2708
1898	2738
1899	2769
1900	2800
1901	2801
1902	2803
1903	2804
1904	2805
1905	2807
1906	2808
1907	2809
1908	2811
1909	2812
1910	2813
1911	2814
1912	2816
1913	2817
1914	2818
1915	2820
1916	2821
1917	2822
1918	2824
1919	2825
1920	2826
1921	2828
1922	2829
1923	2830
1924	2832
1925	2833
1926	2834
1927	2836
1928	2837
1929	2838
1930	2840
1931	2841
1932	2842
1933	2844
1934	2845
1935	3149
1936	3485
1937	3857
1938	4269
1939	4724
1940	5229
1941	5787
1942	6405
1943	7089
1944	7846
1945	8683
1946	9610
1947	10640
1948	11770
1949	13030
1950	14420
1951	14970
1952	15540
1953	16110
1954	16690
1955	17250
1956	17800
1957	18320
1958	18770
1959	19160
1960	19480
1961	19750
1962	20080
1963	20520
1964	21050
1965	21740
1966	22490
1967	23310
1968	24120
1969	24980
1970	25950
1971	25750
1972	27890
1973	29320
1974	29840
1975	27320
1976	33360
1977	32850
1978	29510
1979	32370
1980	36010
1981	33520
1982	30860
1983	30400
1984	32420
1985	25250
1986	23170
1987	22160
1988	24380
1989	25200
1990	27330
1991	26380
1992	27460
1993	26920
1994	28180
1995	26040
1996	24920
1997	24390
1998	23070
1999	24550
2000	30620
2001	30770
2002	35470
2003	41870
2004	47800
2005	55560
2006	58760
2007	57550
2008	51690
2009	43330
2010	42710
2011	40080
2012	40630
2013	41780
2014	42880
2015	43410
2016	43950
2017	44590
2018	45260
2019	45920
