Year	Measure
1800	545
1801	545.3
1802	545.5
1803	545.8
1804	546
1805	546.3
1806	546.6
1807	546.8
1808	547.1
1809	547.3
1810	547.6
1811	547.9
1812	548.1
1813	548.4
1814	548.6
1815	548.9
1816	549.2
1817	549.4
1818	549.7
1819	549.9
1820	550.2
1821	550.5
1822	550.7
1823	551
1824	551.2
1825	551.5
1826	551.8
1827	552
1828	552.3
1829	552.5
1830	552.8
1831	553.1
1832	553.3
1833	553.6
1834	553.9
1835	554.1
1836	554.4
1837	554.6
1838	554.9
1839	555.2
1840	555.4
1841	555.7
1842	556
1843	556.2
1844	556.5
1845	556.8
1846	557
1847	557.3
1848	557.5
1849	557.8
1850	558.1
1851	558.3
1852	558.6
1853	558.9
1854	559.1
1855	559.4
1856	559.7
1857	559.9
1858	560.2
1859	560.5
1860	560.7
1861	561
1862	561.3
1863	561.5
1864	561.8
1865	562.1
1866	562.3
1867	562.6
1868	562.9
1869	563.1
1870	563.4
1871	563.7
1872	563.9
1873	564.2
1874	564.5
1875	564.7
1876	565
1877	565.3
1878	565.5
1879	565.8
1880	566.1
1881	566.3
1882	566.6
1883	566.9
1884	567.1
1885	567.4
1886	567.7
1887	568
1888	568.2
1889	568.5
1890	568.8
1891	569
1892	569.3
1893	569.6
1894	569.8
1895	570.1
1896	570.4
1897	570.7
1898	570.9
1899	571.2
1900	571.5
1901	571.7
1902	572
1903	572.3
1904	572.6
1905	572.8
1906	573.1
1907	573.4
1908	573.6
1909	573.9
1910	574.2
1911	574.5
1912	574.7
1913	575
1914	586.3
1915	597.9
1916	609.7
1917	621.7
1918	634
1919	646.5
1920	659.3
1921	672.3
1922	685.6
1923	699.1
1924	712.9
1925	726.9
1926	741.3
1927	755.9
1928	770.8
1929	786
1930	801.5
1931	817.4
1932	833.5
1933	849.9
1934	866.7
1935	883.8
1936	901.2
1937	919
1938	937.2
1939	955.7
1940	974.5
1941	993.7
1942	1013
1943	1033
1944	1054
1945	1075
1946	1096
1947	1117
1948	1139
1949	1162
1950	1185
1951	1208
1952	1232
1953	1256
1954	1281
1955	1306
1956	1332
1957	1358
1958	1385
1959	1413
1960	1440
1961	1469
1962	1498
1963	1527
1964	1558
1965	1588
1966	1620
1967	1652
1968	1684
1969	1717
1970	1751
1971	1772
1972	1786
1973	2392
1974	2751
1975	2724
1976	2681
1977	2674
1978	2737
1979	2703
1980	2426
1981	2573
1982	2424
1983	2397
1984	2234
1985	2533
1986	2667
1987	2659
1988	2758
1989	2716
1990	2763
1991	2894
1992	2933
1993	3094
1994	3016
1995	3185
1996	3063
1997	2873
1998	2966
1999	3018
2000	3167
2001	3230
2002	3256
2003	3320
2004	3220
2005	3301
2006	3312
2007	3262
2008	3197
2009	3243
2010	3337
2011	3412
2012	3421
2013	3448
2014	3475
2015	3499
2016	3523
2017	3546
2018	3568
2019	3588