Year	Measure
1800	891.7
1801	891.7
1802	891.7
1803	891.7
1804	891.7
1805	891.7
1806	891.7
1807	891.7
1808	891.7
1809	891.7
1810	891.7
1811	891.7
1812	891.7
1813	891.7
1814	891.7
1815	891.7
1816	891.7
1817	891.7
1818	891.7
1819	891.7
1820	891.7
1821	901.7
1822	911.7
1823	921.9
1824	932.2
1825	942.7
1826	953.2
1827	963.9
1828	974.6
1829	985.5
1830	996.6
1831	1008
1832	1019
1833	1030
1834	1042
1835	1054
1836	1065
1837	1077
1838	1089
1839	1101
1840	1114
1841	1126
1842	1139
1843	1152
1844	1164
1845	1177
1846	1191
1847	1204
1848	1217
1849	1231
1850	1245
1851	1259
1852	1273
1853	1287
1854	1301
1855	1316
1856	1331
1857	1345
1858	1361
1859	1376
1860	1391
1861	1407
1862	1422
1863	1438
1864	1454
1865	1471
1866	1487
1867	1504
1868	1521
1869	1538
1870	1555
1871	1572
1872	1590
1873	1607
1874	1625
1875	1644
1876	1662
1877	1681
1878	1699
1879	1718
1880	1738
1881	1757
1882	1777
1883	1797
1884	1817
1885	1837
1886	1857
1887	1878
1888	1899
1889	1920
1890	1942
1891	1964
1892	1986
1893	2008
1894	2030
1895	2053
1896	2076
1897	2099
1898	2123
1899	2146
1900	2170
1901	2195
1902	2219
1903	2244
1904	2269
1905	2294
1906	2320
1907	2346
1908	2372
1909	2399
1910	2426
1911	2453
1912	2480
1913	2508
1914	2536
1915	2564
1916	2593
1917	2622
1918	2651
1919	2681
1920	2711
1921	2741
1922	2772
1923	2803
1924	2834
1925	2866
1926	2898
1927	2930
1928	2963
1929	2996
1930	3030
1931	3064
1932	3098
1933	3132
1934	3167
1935	3203
1936	3239
1937	3275
1938	3312
1939	3349
1940	3386
1941	3424
1942	3462
1943	3501
1944	3540
1945	3580
1946	3651
1947	3728
1948	3430
1949	3441
1950	3247
1951	3137
1952	3221
1953	3337
1954	3377
1955	3482
1956	3572
1957	3846
1958	3797
1959	3934
1960	4052
1961	4361
1962	4593
1963	4883
1964	4948
1965	5228
1966	5455
1967	5741
1968	5984
1969	6268
1970	6462
1971	6797
1972	6966
1973	7202
1974	7171
1975	7114
1976	7061
1977	6950
1978	7497
1979	7655
1980	8627
1981	8802
1982	9103
1983	8982
1984	8761
1985	8988
1986	9095
1987	9135
1988	7560
1989	7384
1990	7576
1991	8099
1992	8595
1993	8883
1994	8989
1995	8987
1996	9027
1997	9238
1998	9422
1999	9551
2000	9617
2001	9502
2002	9552
2003	9805
2004	10370
2005	10910
2006	11640
2007	12810
2008	13860
2009	14140
2010	14930
2011	16250
2012	17690
2013	18770
2014	19760
2015	20750
2016	21690
2017	22630
2018	23540
2019	24910