Year	Measure
1800	533.9
1801	533.9
1802	533.9
1803	533.9
1804	533.9
1805	533.9
1806	533.9
1807	533.9
1808	533.9
1809	533.9
1810	533.9
1811	533.9
1812	533.9
1813	533.9
1814	533.9
1815	533.9
1816	533.9
1817	533.9
1818	533.9
1819	533.9
1820	533.9
1821	536.4
1822	538.9
1823	541.5
1824	544
1825	546.6
1826	549.1
1827	551.7
1828	554.3
1829	556.9
1830	559.5
1831	562.1
1832	564.8
1833	567.4
1834	570.1
1835	572.7
1836	575.4
1837	578.1
1838	580.8
1839	583.6
1840	586.3
1841	589
1842	591.8
1843	594.6
1844	597.4
1845	600.2
1846	603
1847	605.8
1848	608.6
1849	611.5
1850	614.4
1851	617.2
1852	620.1
1853	623.1
1854	626
1855	628.9
1856	631.9
1857	634.8
1858	637.8
1859	640.8
1860	643.8
1861	646.8
1862	649.8
1863	652.9
1864	656
1865	659
1866	662.1
1867	665.2
1868	668.3
1869	671.5
1870	674.6
1871	677.8
1872	681
1873	684.2
1874	687.4
1875	690.6
1876	693.8
1877	697.1
1878	700.4
1879	703.6
1880	706.9
1881	710.2
1882	713.6
1883	716.9
1884	720.3
1885	723.7
1886	727.1
1887	730.5
1888	733.9
1889	737.3
1890	740.8
1891	744.3
1892	747.8
1893	751.3
1894	754.8
1895	758.3
1896	761.9
1897	765.5
1898	769
1899	772.6
1900	776.3
1901	779.9
1902	783.6
1903	787.2
1904	790.9
1905	794.6
1906	798.4
1907	802.1
1908	805.9
1909	809.7
1910	813.4
1911	817.3
1912	821.1
1913	824.9
1914	841.3
1915	858.1
1916	875.1
1917	892.5
1918	910.3
1919	928.4
1920	946.9
1921	965.7
1922	984.9
1923	1004
1924	1024
1925	1045
1926	1066
1927	1087
1928	1108
1929	1130
1930	1153
1931	1176
1932	1199
1933	1223
1934	1247
1935	1272
1936	1297
1937	1323
1938	1350
1939	1376
1940	1404
1941	1432
1942	1460
1943	1489
1944	1519
1945	1549
1946	1580
1947	1611
1948	1643
1949	1676
1950	1709
1951	1743
1952	1780
1953	1814
1954	1850
1955	1888
1956	2032
1957	1950
1958	1976
1959	2151
1960	2131
1961	2074
1962	2158
1963	2040
1964	1966
1965	2050
1966	1971
1967	1859
1968	1921
1969	1986
1970	1850
1971	1922
1972	1828
1973	1624
1974	1734
1975	1895
1976	2174
1977	2427
1978	2307
1979	1992
1980	1940
1981	1916
1982	2088
1983	1996
1984	1829
1985	1648
1986	1662
1987	1661
1988	1646
1989	1734
1990	1548
1991	1607
1992	1644
1993	1647
1994	1634
1995	1639
1996	1679
1997	1798
1998	1851
1999	1937
2000	2064
2001	2129
2002	2196
2003	2288
2004	2342
2005	2477
2006	2657
2007	2888
2008	2904
2009	2915
2010	2968
2011	3505
2012	1752
2013	2080
2014	2129
2015	2396
2016	2718
2017	2753
2018	2844
2019	2950