Year	Measure
1800	902.2
1801	902.2
1802	902.2
1803	902.2
1804	902.2
1805	902.2
1806	902.2
1807	902.2
1808	902.2
1809	902.2
1810	902.2
1811	902.2
1812	902.2
1813	902.2
1814	902.2
1815	902.2
1816	902.2
1817	902.2
1818	902.2
1819	902.2
1820	902.2
1821	909.4
1822	916.7
1823	924.1
1824	931.5
1825	938.9
1826	946.5
1827	954
1828	961.7
1829	969.4
1830	977.2
1831	985
1832	992.9
1833	1001
1834	1009
1835	1017
1836	1025
1837	1033
1838	1042
1839	1050
1840	1058
1841	1067
1842	1075
1843	1084
1844	1093
1845	1101
1846	1110
1847	1119
1848	1128
1849	1137
1850	1146
1851	1156
1852	1165
1853	1174
1854	1184
1855	1193
1856	1203
1857	1212
1858	1222
1859	1232
1860	1242
1861	1252
1862	1262
1863	1272
1864	1282
1865	1292
1866	1303
1867	1313
1868	1324
1869	1334
1870	1345
1871	1356
1872	1366
1873	1377
1874	1388
1875	1400
1876	1411
1877	1422
1878	1434
1879	1445
1880	1457
1881	1468
1882	1480
1883	1492
1884	1504
1885	1516
1886	1528
1887	1540
1888	1553
1889	1565
1890	1578
1891	1590
1892	1603
1893	1616
1894	1629
1895	1642
1896	1655
1897	1668
1898	1682
1899	1695
1900	1709
1901	1722
1902	1736
1903	1750
1904	1764
1905	1778
1906	1793
1907	1807
1908	1821
1909	1836
1910	1851
1911	1866
1912	1881
1913	1896
1914	1911
1915	1926
1916	1942
1917	1957
1918	1973
1919	1989
1920	2005
1921	2178
1922	2034
1923	2214
1924	2369
1925	2300
1926	2300
1927	2425
1928	2454
1929	2711
1930	2798
1931	2553
1932	2174
1933	2139
1934	2382
1935	2697
1936	3632
1937	3476
1938	3504
1939	3871
1940	4320
1941	4451
1942	4411
1943	2890
1944	2744
1945	2729
1946	3155
1947	3112
1948	3132
1949	3325
1950	3285
1951	3236
1952	3209
1953	3231
1954	3197
1955	3181
1956	3371
1957	3458
1958	3515
1959	3582
1960	3563
1961	3611
1962	3634
1963	3870
1964	3936
1965	4037
1966	4188
1967	4285
1968	4580
1969	4712
1970	4890
1971	5062
1972	5327
1973	5575
1974	5811
1975	5804
1976	6106
1977	6448
1978	6632
1979	6805
1980	6919
1981	6802
1982	6370
1983	6063
1984	5931
1985	5732
1986	5578
1987	5611
1988	5662
1989	5715
1990	5720
1991	5760
1992	5866
1993	5924
1994	5988
1995	6108
1996	6114
1997	6190
1998	6330
1999	6396
2000	6455
2001	6438
2002	6420
2003	6397
2004	6420
2005	6471
2006	6652
2007	6899
2008	6953
2009	6820
2010	6847
2011	6957
2012	6989
2013	7057
2014	7126
2015	7195
2016	7266
2017	7336
2018	7408
2019	7480