Year	Measure
1800	925.8
1801	925.8
1802	925.8
1803	925.8
1804	925.8
1805	925.8
1806	925.8
1807	925.8
1808	925.8
1809	925.8
1810	925.8
1811	925.8
1812	925.8
1813	925.8
1814	925.8
1815	925.8
1816	925.8
1817	925.8
1818	925.8
1819	925.8
1820	925.8
1821	925.8
1822	925.8
1823	925.8
1824	925.8
1825	925.8
1826	925.8
1827	925.8
1828	925.8
1829	925.8
1830	925.8
1831	925.8
1832	925.8
1833	925.8
1834	925.8
1835	925.8
1836	925.8
1837	925.8
1838	925.8
1839	925.8
1840	925.8
1841	925.8
1842	925.8
1843	925.8
1844	925.8
1845	925.8
1846	925.8
1847	925.8
1848	925.8
1849	925.8
1850	925.8
1851	925.8
1852	925.8
1853	925.8
1854	925.8
1855	925.8
1856	925.8
1857	925.8
1858	925.8
1859	925.8
1860	925.8
1861	925.8
1862	925.8
1863	925.8
1864	925.8
1865	925.8
1866	925.8
1867	925.8
1868	925.8
1869	925.8
1870	925.8
1871	930.8
1872	935.9
1873	941
1874	946.1
1875	951.3
1876	956.4
1877	961.7
1878	966.9
1879	972.2
1880	977.5
1881	982.8
1882	988.2
1883	993.5
1884	999
1885	1004
1886	1010
1887	1015
1888	1021
1889	1026
1890	1032
1891	1038
1892	1043
1893	1049
1894	1055
1895	1061
1896	1066
1897	1072
1898	1078
1899	1084
1900	1090
1901	1096
1902	1102
1903	1108
1904	1114
1905	1120
1906	1126
1907	1132
1908	1138
1909	1144
1910	1151
1911	1157
1912	1163
1913	1170
1914	1115
1915	1062
1916	1012
1917	964.6
1918	997.7
1919	1032
1920	1067
1921	1104
1922	1142
1923	1089
1924	1367
1925	1462
1926	1243
1927	1373
1928	1497
1929	1716
1930	2053
1931	2326
1932	2657
1933	3160
1934	3527
1935	3367
1936	2787
1937	2462
1938	2255
1939	2166
1940	2190
1941	2480
1942	2941
1943	3059
1944	3142
1945	3237
1946	3533
1947	3693
1948	3873
1949	4061
1950	4259
1951	4776
1952	4579
1953	4400
1954	5101
1955	5595
1956	5836
1957	6035
1958	6212
1959	6805
1960	7050
1961	7553
1962	7963
1963	8456
1964	8944
1965	9483
1966	9358
1967	9406
1968	10630
1969	11680
1970	12250
1971	13170
1972	14330
1973	14580
1974	15160
1975	15340
1976	15230
1977	14910
1978	15310
1979	15900
1980	16610
1981	17170
1982	17220
1983	17520
1984	17330
1985	17620
1986	18180
1987	19190
1988	19260
1989	19100
1990	19600
1991	19880
1992	20290
1993	20850
1994	21730
1995	22540
1996	23160
1997	23350
1998	23760
1999	23940
2000	25480
2001	24830
2002	24190
2003	24120
2004	24840
2005	25620
2006	26570
2007	27910
2008	28640
2009	28320
2010	29380
2011	30160
2012	30500
2013	30840
2014	31150
2015	31520
2016	31880
2017	32280
2018	32670
2019	33080