Year	Measure
1800	569.1
1801	569.1
1802	569.1
1803	569.1
1804	569.1
1805	569.1
1806	569.1
1807	569.1
1808	569.1
1809	569.1
1810	569.1
1811	569.1
1812	569.1
1813	569.1
1814	569.1
1815	569.1
1816	569.1
1817	569.1
1818	569.1
1819	569.1
1820	569.1
1821	569.1
1822	569.1
1823	569.1
1824	569.1
1825	569.1
1826	569.1
1827	569.1
1828	569.1
1829	569.1
1830	569.1
1831	569.1
1832	569.1
1833	569.1
1834	569.1
1835	569.1
1836	569.1
1837	569.1
1838	569.1
1839	569.1
1840	569.1
1841	569.1
1842	569.1
1843	569.1
1844	569.1
1845	569.1
1846	569.1
1847	569.1
1848	569.1
1849	569.1
1850	569.1
1851	569.1
1852	569.1
1853	569.1
1854	569.1
1855	569.1
1856	569.1
1857	569.1
1858	569.1
1859	569.1
1860	569.1
1861	569.1
1862	569.1
1863	569.1
1864	569.1
1865	569.1
1866	569.1
1867	569.1
1868	569.1
1869	569.1
1870	569.1
1871	575.1
1872	581.2
1873	587.4
1874	593.6
1875	599.9
1876	606.3
1877	612.7
1878	619.2
1879	625.8
1880	632.4
1881	639.1
1882	645.9
1883	652.7
1884	659.6
1885	666.6
1886	673.7
1887	680.9
1888	688.1
1889	695.4
1890	702.7
1891	710.2
1892	717.7
1893	725.3
1894	733
1895	740.8
1896	748.7
1897	756.6
1898	764.6
1899	772.7
1900	780.9
1901	789.2
1902	756.7
1903	725.5
1904	695.7
1905	667
1906	639.5
1907	648.4
1908	657.3
1909	666.3
1910	675.5
1911	684.8
1912	729.2
1913	773.6
1914	822.2
1915	873.9
1916	928.7
1917	902
1918	876.1
1919	850.9
1920	826.4
1921	802.7
1922	824.6
1923	847.2
1924	870.4
1925	894.2
1926	918.7
1927	937.9
1928	957.5
1929	977.5
1930	998
1931	1019
1932	1004
1933	989.3
1934	974.8
1935	960.5
1936	946.5
1937	889.1
1938	835.2
1939	792.9
1940	752.8
1941	714.7
1942	602.9
1943	508.6
1944	429.1
1945	430.2
1946	433.5
1947	436.8
1948	440.1
1949	443.4
1950	446.8
1951	504.1
1952	507.3
1953	512.7
1954	473.5
1955	526.9
1956	552.9
1957	576.1
1958	551.3
1959	626.3
1960	636.3
1961	640.7
1962	684.6
1963	691.7
1964	691.5
1965	696.3
1966	655.1
1967	661.1
1968	691.5
1969	706.5
1970	724.4
1971	733.8
1972	725
1973	708.8
1974	732.2
1975	749.1
1976	780.9
1977	813.4
1978	853.5
1979	878.8
1980	935.1
1981	970.2
1982	1004
1983	1027
1984	1057
1985	1067
1986	1037
1987	979
1988	854.9
1989	874.5
1990	887.2
1991	870.4
1992	891.7
1993	904.2
1994	919.5
1995	933.8
1996	947.3
1997	959.3
1998	971.7
1999	998.7
2000	1034
2001	1065
2002	1098
2003	1138
2004	1175
2005	1169
2006	1296
2007	1423
2008	1445
2009	1489
2010	1538
2011	1590
2012	1657
2013	1729
2014	1807
2015	1890
2016	1980
2017	2074
2018	2175