Year	Measure
1800	1295
1801	1295
1802	1295
1803	1295
1804	1295
1805	1295
1806	1295
1807	1295
1808	1295
1809	1295
1810	1295
1811	1295
1812	1295
1813	1295
1814	1295
1815	1295
1816	1295
1817	1295
1818	1295
1819	1295
1820	1295
1821	1302
1822	1309
1823	1316
1824	1322
1825	1329
1826	1336
1827	1344
1828	1351
1829	1358
1830	1365
1831	1372
1832	1379
1833	1387
1834	1394
1835	1401
1836	1409
1837	1416
1838	1424
1839	1431
1840	1439
1841	1446
1842	1454
1843	1462
1844	1470
1845	1477
1846	1485
1847	1493
1848	1501
1849	1509
1850	1517
1851	1525
1852	1533
1853	1541
1854	1549
1855	1557
1856	1565
1857	1574
1858	1582
1859	1590
1860	1599
1861	1607
1862	1616
1863	1624
1864	1633
1865	1642
1866	1650
1867	1659
1868	1668
1869	1677
1870	1685
1871	1694
1872	1703
1873	1712
1874	1721
1875	1730
1876	1740
1877	1749
1878	1758
1879	1767
1880	1777
1881	1786
1882	1795
1883	1805
1884	1815
1885	1824
1886	1834
1887	1843
1888	1853
1889	1863
1890	1873
1891	1883
1892	1893
1893	1903
1894	1913
1895	1923
1896	1933
1897	1943
1898	1954
1899	1964
1900	1974
1901	1985
1902	1995
1903	2006
1904	2016
1905	2027
1906	2038
1907	2048
1908	2059
1909	2070
1910	2081
1911	2092
1912	2103
1913	2114
1914	2161
1915	2208
1916	2256
1917	2306
1918	2356
1919	2408
1920	2461
1921	2515
1922	2570
1923	2626
1924	2683
1925	2742
1926	2802
1927	2864
1928	2927
1929	2991
1930	3056
1931	3123
1932	3192
1933	3261
1934	3333
1935	3406
1936	3481
1937	3557
1938	3635
1939	3714
1940	3796
1941	3879
1942	3964
1943	4051
1944	4140
1945	4230
1946	4323
1947	4418
1948	4514
1949	4613
1950	4714
1951	4997
1952	5056
1953	5074
1954	5022
1955	5538
1956	6491
1957	6858
1958	7197
1959	7369
1960	8021
1961	8175
1962	8358
1963	8621
1964	8726
1965	9021
1966	9283
1967	9402
1968	9860
1969	10130
1970	10580
1971	10610
1972	11070
1973	11140
1974	11620
1975	11700
1976	12640
1977	13210
1978	14520
1979	14950
1980	15890
1981	16420
1982	15250
1983	13850
1984	14460
1985	13680
1986	13080
1987	12360
1988	11810
1989	11690
1990	11900
1991	12370
1992	12330
1993	12280
1994	12890
1995	13500
1996	14130
1997	14710
1998	15500
1999	16650
2000	17560
2001	18430
2002	19170
2003	21790
2004	23380
2005	25680
2006	28990
2007	30250
2008	31140
2009	29740
2010	29630
2011	28740
2012	29010
2013	29330
2014	29820
2015	30320
2016	30690
2017	31010
2018	31340
2019	31680