Year	Measure
1800	557.1
1801	557.1
1802	557.1
1803	557.1
1804	557.1
1805	557.1
1806	557.1
1807	557.1
1808	557.1
1809	557.1
1810	557.1
1811	557.1
1812	557.1
1813	557.1
1814	557.1
1815	557.1
1816	557.1
1817	557.1
1818	557.1
1819	557.1
1820	557.1
1821	559.3
1822	561.7
1823	564
1824	566.3
1825	568.6
1826	571
1827	573.3
1828	575.7
1829	578
1830	580.4
1831	582.8
1832	585.2
1833	587.6
1834	590
1835	592.5
1836	594.9
1837	597.3
1838	599.8
1839	602.3
1840	604.7
1841	607.2
1842	609.7
1843	612.2
1844	614.8
1845	617.3
1846	619.8
1847	622.4
1848	625
1849	627.5
1850	630.1
1851	632.7
1852	635.3
1853	637.9
1854	640.5
1855	643.2
1856	645.8
1857	648.5
1858	651.2
1859	653.8
1860	656.5
1861	659.2
1862	661.9
1863	664.7
1864	667.4
1865	670.1
1866	672.9
1867	675.7
1868	678.5
1869	681.2
1870	684.1
1871	686.9
1872	689.7
1873	692.5
1874	695.4
1875	698.2
1876	701.1
1877	704
1878	706.9
1879	709.8
1880	712.7
1881	715.7
1882	718.6
1883	721.6
1884	724.5
1885	727.5
1886	730.5
1887	733.5
1888	736.5
1889	739.6
1890	742.6
1891	745.7
1892	748.7
1893	751.8
1894	754.9
1895	758
1896	761.1
1897	764.3
1898	767.4
1899	770.6
1900	773.8
1901	776.9
1902	780.1
1903	783.4
1904	786.6
1905	789.8
1906	793.1
1907	796.3
1908	799.6
1909	802.9
1910	806.2
1911	809.5
1912	812.9
1913	816.2
1914	819.6
1915	822.9
1916	826.3
1917	829.7
1918	833.1
1919	836.6
1920	840
1921	843.5
1922	846.9
1923	850.4
1924	853.9
1925	857.4
1926	861
1927	864.5
1928	868.1
1929	871.6
1930	875.2
1931	878.8
1932	882.4
1933	886.1
1934	889.7
1935	893.4
1936	897.1
1937	900.8
1938	904.5
1939	908.2
1940	911.9
1941	915.7
1942	919.4
1943	923.2
1944	927
1945	930.8
1946	934.7
1947	938.5
1948	942.4
1949	946.3
1950	950.2
1951	962.2
1952	974.4
1953	986.8
1954	973
1955	977.8
1956	990
1957	956.2
1958	948.1
1959	1027
1960	1072
1961	1109
1962	1140
1963	1168
1964	1192
1965	1214
1966	1236
1967	1255
1968	1273
1969	1291
1970	1308
1971	1197
1972	1133
1973	1117
1974	1081
1975	1109
1976	1099
1977	1094
1978	1197
1979	1314
1980	1776
1981	1910
1982	1936
1983	2088
1984	2132
1985	2280
1986	2307
1987	2427
1988	2459
1989	2548
1990	2602
1991	2567
1992	2532
1993	2498
1994	2622
1995	2786
1996	2931
1997	3118
1998	3307
1999	3553
2000	3754
2001	3943
2002	4105
2003	4261
2004	4412
2005	4638
2006	5033
2007	5389
2008	5644
2009	5773
2010	5990
2011	6206
2012	6219
2013	6175
2014	6286
2015	6428
2016	6608
2017	6791
2018	6977
2019	7171