Year	Measure
1800	791.6
1801	794
1802	796.4
1803	798.8
1804	801.2
1805	803.6
1806	806.1
1807	808.5
1808	810.9
1809	813.4
1810	815.8
1811	818.3
1812	820.8
1813	823.2
1814	825.7
1815	828.2
1816	830.7
1817	833.2
1818	835.7
1819	838.3
1820	840.8
1821	843.3
1822	845.9
1823	848.4
1824	851
1825	853.6
1826	856.1
1827	858.7
1828	861.3
1829	863.9
1830	866.5
1831	869.1
1832	871.8
1833	874.4
1834	877
1835	879.7
1836	882.3
1837	885
1838	887.7
1839	890.3
1840	893
1841	895.7
1842	898.4
1843	901.1
1844	903.9
1845	906.6
1846	909.3
1847	912.1
1848	914.8
1849	917.6
1850	920.4
1851	923.1
1852	925.9
1853	928.7
1854	931.5
1855	934.3
1856	937.2
1857	940
1858	942.8
1859	945.7
1860	948.5
1861	951.4
1862	954.3
1863	957.1
1864	960
1865	962.9
1866	965.8
1867	968.8
1868	971.7
1869	974.6
1870	977.6
1871	980.5
1872	983.5
1873	986.4
1874	989.4
1875	992.4
1876	995.4
1877	998.4
1878	1001
1879	1004
1880	1007
1881	1011
1882	1014
1883	1017
1884	1020
1885	1023
1886	1026
1887	1029
1888	1032
1889	1035
1890	1038
1891	1041
1892	1045
1893	1048
1894	1051
1895	1054
1896	1057
1897	1060
1898	1064
1899	1067
1900	1070
1901	1073
1902	1077
1903	1080
1904	1083
1905	1086
1906	1090
1907	1093
1908	1096
1909	1099
1910	1103
1911	1106
1912	1109
1913	1113
1914	1145
1915	1179
1916	1214
1917	1249
1918	1286
1919	1323
1920	1362
1921	1402
1922	1443
1923	1485
1924	1529
1925	1574
1926	1620
1927	1667
1928	1716
1929	1766
1930	1818
1931	1871
1932	1926
1933	1982
1934	2041
1935	2100
1936	2162
1937	2225
1938	2290
1939	2357
1940	2427
1941	2498
1942	2571
1943	2646
1944	2724
1945	2803
1946	2886
1947	2970
1948	3057
1949	3147
1950	3239
1951	3338
1952	3356
1953	3401
1954	3504
1955	3524
1956	3567
1957	3602
1958	3595
1959	3696
1960	3826
1961	3851
1962	3798
1963	3831
1964	3797
1965	3789
1966	3804
1967	3797
1968	3771
1969	3763
1970	4469
1971	4626
1972	4644
1973	4719
1974	4492
1975	4461
1976	4653
1977	3874
1978	3724
1979	3644
1980	3588
1981	3615
1982	3620
1983	3548
1984	3891
1985	3798
1986	3708
1987	3621
1988	3448
1989	3245
1990	3127
1991	3066
1992	2989
1993	2806
1994	2715
1995	2580
1996	2423
1997	2382
1998	2358
1999	2390
2000	2381
2001	2388
2002	2399
2003	2428
2004	2442
2005	2469
2006	2516
2007	2572
2008	2647
2009	2705
2010	2723
2011	2767
2012	2822
2013	2882
2014	2972
2015	3078
2016	3188
2017	3303
2018	3406
2019	3505