Year	Measure
1800	756.3
1801	756.3
1802	756.3
1803	756.3
1804	756.3
1805	756.3
1806	756.3
1807	756.3
1808	756.3
1809	756.3
1810	756.3
1811	756.3
1812	756.3
1813	756.3
1814	756.3
1815	756.3
1816	756.3
1817	756.3
1818	756.3
1819	756.3
1820	756.3
1821	758.8
1822	761.3
1823	763.7
1824	766.2
1825	768.7
1826	771.2
1827	773.7
1828	776.2
1829	778.7
1830	781.3
1831	783.8
1832	786.3
1833	788.9
1834	791.5
1835	794
1836	796.6
1837	799.2
1838	801.8
1839	804.4
1840	807
1841	809.6
1842	812.3
1843	814.9
1844	817.5
1845	820.2
1846	822.9
1847	825.5
1848	828.2
1849	830.9
1850	833.6
1851	836.3
1852	839
1853	841.7
1854	844.5
1855	847.2
1856	850
1857	852.7
1858	855.5
1859	858.3
1860	861.1
1861	863.9
1862	866.7
1863	869.5
1864	872.3
1865	875.1
1866	878
1867	880.8
1868	883.7
1869	886.6
1870	889.4
1871	892.3
1872	895.2
1873	898.1
1874	901.1
1875	904
1876	906.9
1877	909.9
1878	912.8
1879	915.8
1880	918.8
1881	921.7
1882	924.7
1883	927.7
1884	930.7
1885	933.8
1886	936.8
1887	939.8
1888	942.9
1889	946
1890	949
1891	952.1
1892	955.2
1893	958.3
1894	961.4
1895	964.5
1896	967.7
1897	970.8
1898	974
1899	977.1
1900	980.3
1901	983.5
1902	986.7
1903	989.9
1904	993.1
1905	996.3
1906	999.6
1907	1003
1908	1006
1909	1009
1910	1013
1911	1016
1912	1019
1913	1023
1914	1032
1915	1042
1916	1051
1917	1061
1918	1071
1919	1081
1920	1091
1921	1101
1922	1112
1923	1122
1924	1133
1925	1143
1926	1154
1927	1165
1928	1176
1929	1187
1930	1198
1931	1209
1932	1220
1933	1231
1934	1243
1935	1255
1936	1266
1937	1278
1938	1290
1939	1302
1940	1314
1941	1327
1942	1339
1943	1351
1944	1364
1945	1377
1946	1390
1947	1403
1948	1416
1949	1429
1950	1442
1951	1456
1952	1469
1953	1483
1954	1497
1955	1511
1956	1525
1957	1539
1958	1554
1959	1568
1960	1583
1961	1598
1962	1613
1963	1628
1964	1643
1965	1658
1966	1674
1967	1689
1968	1705
1969	1721
1970	1737
1971	1757
1972	1756
1973	2328
1974	2658
1975	2635
1976	2621
1977	2662
1978	2788
1979	2819
1980	2588
1981	2375
1982	1888
1983	1853
1984	1958
1985	1888
1986	1845
1987	1992
1988	2160
1989	2082
1990	2369
1991	2441
1992	2496
1993	2586
1994	2839
1995	2686
1996	2515
1997	2757
1998	3172
1999	3109
2000	3064
2001	3097
2002	3321
2003	3190
2004	3129
2005	2995
2006	3048
2007	3230
2008	3480
2009	3319
2010	3222
2011	3488
2012	3481
2013	3504
2014	3548
2015	3599
2016	3654
2017	3704
2018	3757
2019	3813