Year	Measure
1820	718.4
1821	721.7
1822	725.1
1823	728.5
1824	731.9
1825	735.4
1826	738.8
1827	742.3
1828	745.7
1829	749.2
1830	752.8
1831	756.3
1832	759.8
1833	763.4
1834	767
1835	770.6
1836	774.2
1837	777.8
1838	781.5
1839	785.1
1840	788.8
1841	792.5
1842	796.2
1843	800
1844	803.7
1845	807.5
1846	811.3
1847	815.1
1848	818.9
1849	822.7
1850	826.6
1851	830.5
1852	834.4
1853	838.3
1854	842.2
1855	846.1
1856	850.1
1857	854.1
1858	858.1
1859	862.1
1860	866.2
1861	870.2
1862	874.3
1863	878.4
1864	882.5
1865	886.7
1866	890.8
1867	895
1868	899.2
1869	903.4
1870	907.7
1871	911.9
1872	916.2
1873	920.5
1874	924.8
1875	929.1
1876	933.5
1877	937.9
1878	942.3
1879	946.7
1880	951.1
1881	955.6
1882	960.1
1883	964.6
1884	969.1
1885	973.6
1886	978.2
1887	982.8
1888	987.4
1889	992
1890	996.7
1891	1001
1892	1006
1893	1011
1894	1016
1895	1020
1896	1025
1897	1030
1898	1035
1899	1040
1900	1044
1901	1049
1902	1054
1903	1059
1904	1064
1905	1069
1906	1074
1907	1079
1908	1084
1909	1089
1910	1094
1911	1100
1912	1105
1913	1110
1914	1110
1915	1110
1916	1110
1917	1111
1918	1111
1919	1111
1920	1111
1921	1111
1922	1111
1923	1112
1924	1112
1925	1112
1926	1112
1927	1112
1928	1112
1929	1113
1930	1113
1931	1113
1932	1113
1933	1113
1934	1113
1935	1114
1936	1114
1937	1114
1938	1114
1939	1114
1940	1114
1941	1114
1942	1115
1943	1115
1944	1115
1945	1115
1946	1115
1947	1115
1948	1116
1949	1116
1950	1116
1951	1135
1952	1153
1953	1171
1954	1189
1955	1207
1956	1225
1957	1242
1958	1258
1959	1275
1960	1356
1961	1415
1962	1432
1963	1465
1964	1635
1965	1811
1966	1927
1967	1982
1968	2028
1969	2189
1970	2091
1971	2188
1972	2213
1973	2075
1974	2113
1975	2052
1976	1995
1977	2056
1978	2213
1979	2290
1980	2132
1981	1940
1982	1803
1983	1647
1984	1638
1985	1655
1986	1648
1987	1612
1988	1626
1989	1627
1990	1556
1991	1494
1992	1387
1993	1166
1994	1361
1995	1376
1996	1440
1997	1317
1998	1251
1999	1252
2000	1194
2001	1169
2002	1189
2003	1217
2004	1212
2005	1191
2006	1209
2007	1206
2008	1204
2009	1220
2010	1241
2011	1273
2012	1314
2013	1352
2014	1396
2015	1442
2016	1491
2017	1537
2018	1580
2019	1619