Year	Measure
1820	555.2
1821	557.8
1822	560.4
1823	563.1
1824	565.7
1825	568.4
1826	571
1827	573.7
1828	576.4
1829	579.1
1830	581.8
1831	584.5
1832	587.3
1833	590
1834	592.8
1835	595.6
1836	598.4
1837	601.2
1838	604
1839	606.8
1840	609.7
1841	612.5
1842	615.4
1843	618.3
1844	621.2
1845	624.1
1846	627
1847	630
1848	632.9
1849	635.9
1850	638.9
1851	641.9
1852	644.9
1853	647.9
1854	650.9
1855	654
1856	657
1857	660.1
1858	663.2
1859	666.3
1860	669.5
1861	672.6
1862	675.8
1863	678.9
1864	682.1
1865	685.3
1866	688.5
1867	691.7
1868	695
1869	698.2
1870	701.5
1871	704.8
1872	708.1
1873	711.4
1874	714.8
1875	718.1
1876	721.5
1877	724.9
1878	728.3
1879	731.7
1880	735.1
1881	738.6
1882	742
1883	745.5
1884	749
1885	752.5
1886	756
1887	759.6
1888	763.2
1889	766.7
1890	770.3
1891	773.9
1892	777.6
1893	781.2
1894	784.9
1895	788.6
1896	792.3
1897	796
1898	799.7
1899	803.5
1900	807.2
1901	811
1902	814.8
1903	818.6
1904	822.5
1905	826.3
1906	830.2
1907	834.1
1908	838
1909	841.9
1910	845.9
1911	849.8
1912	853.8
1913	857.8
1914	862.4
1915	866.9
1916	871.5
1917	876.1
1918	880.7
1919	885.4
1920	890.1
1921	894.8
1922	899.5
1923	904.2
1924	909
1925	913.8
1926	918.6
1927	923.5
1928	928.4
1929	933.3
1930	938.2
1931	943.2
1932	948.1
1933	953.1
1934	958.2
1935	963.2
1936	968.3
1937	973.4
1938	978.6
1939	983.8
1940	989
1941	994.2
1942	999.4
1943	1005
1944	1010
1945	1015
1946	1021
1947	1026
1948	1032
1949	1037
1950	1042
1951	1072
1952	1102
1953	1132
1954	1162
1955	1193
1956	1224
1957	1255
1958	1285
1959	1317
1960	1403
1961	1622
1962	1566
1963	1450
1964	1858
1965	2086
1966	2067
1967	2108
1968	2260
1969	2190
1970	2379
1971	2363
1972	2353
1973	2170
1974	2351
1975	2162
1976	2292
1977	2221
1978	2169
1979	2222
1980	2262
1981	2295
1982	2197
1983	2249
1984	2035
1985	2041
1986	2100
1987	2108
1988	2128
1989	2148
1990	2067
1991	2061
1992	2019
1993	2047
1994	2072
1995	2109
1996	2181
1997	2199
1998	2217
1999	2241
2000	2285
2001	2316
2002	2342
2003	2402
2004	2454
2005	2508
2006	2722
2007	2679
2008	2703
2009	2605
2010	2672
2011	2710
2012	2831
2013	2949
2014	3077
2015	3201
2016	3324
2017	3525
2018	3632
2019	3926