Year	Measure
1800	975.8
1801	975.8
1802	975.8
1803	975.8
1804	975.8
1805	975.8
1806	975.8
1807	975.8
1808	975.8
1809	975.8
1810	975.8
1811	975.8
1812	975.8
1813	975.8
1814	975.8
1815	975.8
1816	975.8
1817	975.8
1818	975.8
1819	975.8
1820	975.8
1821	975.8
1822	975.8
1823	975.8
1824	975.8
1825	975.8
1826	975.9
1827	975.9
1828	975.9
1829	975.9
1830	975.9
1831	975.9
1832	975.9
1833	975.9
1834	975.9
1835	975.9
1836	975.9
1837	975.9
1838	975.9
1839	975.9
1840	975.9
1841	975.9
1842	975.9
1843	975.9
1844	975.9
1845	975.9
1846	975.9
1847	975.9
1848	975.9
1849	975.9
1850	975.9
1851	975.9
1852	976
1853	976
1854	976
1855	976
1856	976
1857	976
1858	976
1859	976
1860	976
1861	976
1862	976
1863	976
1864	976
1865	976
1866	976
1867	976
1868	976
1869	976
1870	976
1871	979.5
1872	982.9
1873	986.4
1874	989.9
1875	993.4
1876	996.9
1877	1000
1878	1004
1879	1008
1880	1011
1881	1015
1882	1018
1883	1022
1884	1026
1885	1029
1886	1033
1887	1036
1888	1040
1889	1044
1890	1048
1891	1051
1892	1055
1893	1059
1894	1062
1895	1066
1896	1070
1897	1074
1898	1078
1899	1081
1900	1085
1901	1089
1902	1089
1903	1291
1904	1229
1905	994.4
1906	1048
1907	1160
1908	1197
1909	1336
1910	1359
1911	1270
1912	1195
1913	1299
1914	1252
1915	1304
1916	1405
1917	1576
1918	1506
1919	1547
1920	1527
1921	1575
1922	1744
1923	1776
1924	1906
1925	1978
1926	1973
1927	1937
1928	1951
1929	2011
1930	2040
1931	2016
1932	2085
1933	1976
1934	2031
1935	2191
1936	2267
1937	2238
1938	2329
1939	2237
1940	2032
1941	1903
1942	1946
1943	1764
1944	1505
1945	822.7
1946	889.9
1947	1025
1948	1270
1949	1414
1950	1685
1951	1750
1952	1902
1953	2011
1954	2129
1955	2216
1956	2217
1957	2310
1958	2381
1959	2464
1960	2586
1961	2672
1962	2828
1963	3117
1964	3431
1965	3597
1966	3865
1967	4177
1968	4495
1969	4807
1970	5183
1971	5799
1972	6575
1973	7188
1974	6798
1975	7111
1976	8224
1977	8988
1978	9966
1979	10440
1980	10700
1981	11230
1982	11570
1983	12570
1984	13670
1985	14040
1986	16130
1987	17600
1988	17930
1989	19440
1990	20430
1991	22000
1992	23210
1993	24600
1994	26090
1995	27310
1996	28870
1997	30610
1998	31880
1999	32850
2000	34200
2001	32910
2002	34260
2003	34840
2004	36030
2005	36820
2006	37660
2007	38760
2008	36530
2009	36490
2010	39080
2011	39060
2012	39480
2013	40210
2014	41380
2015	42880
2016	44570
2017	46390
2018	48340
2019	50390