Year	Measure
1800	871.4
1801	871.4
1802	871.4
1803	871.4
1804	871.4
1805	871.4
1806	871.4
1807	871.4
1808	871.4
1809	871.4
1810	871.4
1811	871.4
1812	871.4
1813	871.4
1814	871.4
1815	871.4
1816	871.4
1817	871.4
1818	871.4
1819	871.4
1820	871.4
1821	871.4
1822	871.4
1823	871.4
1824	871.4
1825	871.4
1826	871.4
1827	871.4
1828	871.4
1829	871.4
1830	871.4
1831	871.4
1832	871.4
1833	871.4
1834	871.4
1835	871.4
1836	871.4
1837	871.4
1838	871.4
1839	871.4
1840	871.4
1841	871.4
1842	871.4
1843	871.4
1844	871.4
1845	871.4
1846	871.4
1847	871.4
1848	871.4
1849	871.4
1850	871.4
1851	871.4
1852	871.4
1853	871.4
1854	871.4
1855	871.4
1856	871.4
1857	871.4
1858	871.4
1859	871.4
1860	871.4
1861	871.4
1862	871.4
1863	871.4
1864	871.4
1865	871.4
1866	871.4
1867	871.4
1868	871.4
1869	871.4
1870	871.4
1871	873.6
1872	875.8
1873	877.9
1874	880.1
1875	882.3
1876	884.5
1877	886.7
1878	888.9
1879	891.2
1880	893.4
1881	895.6
1882	897.9
1883	900.1
1884	902.3
1885	904.6
1886	906.9
1887	909.1
1888	911.4
1889	913.7
1890	915.9
1891	918.2
1892	920.5
1893	922.8
1894	925.1
1895	927.4
1896	929.7
1897	932.1
1898	934.4
1899	936.7
1900	939.1
1901	941.4
1902	943.8
1903	946.1
1904	948.5
1905	950.8
1906	953.2
1907	955.6
1908	958
1909	960.4
1910	962.8
1911	965.2
1912	967.6
1913	970
1914	924.4
1915	880.9
1916	839.5
1917	800
1918	827.5
1919	855.9
1920	885.3
1921	915.8
1922	947.2
1923	909.7
1924	1013
1925	994.1
1926	1041
1927	1116
1928	937.9
1929	1041
1930	1060
1931	1069
1932	1041
1933	1041
1934	1360
1935	1660
1936	1510
1937	1707
1938	1454
1939	1397
1940	1435
1941	1566
1942	1773
1943	1829
1944	1876
1945	1960
1946	2185
1947	2317
1948	1801
1949	1400
1950	1470
1951	1544
1952	1622
1953	1632
1954	1643
1955	1654
1956	1665
1957	1676
1958	1687
1959	1698
1960	1709
1961	1721
1962	1732
1963	1743
1964	1755
1965	1767
1966	1778
1967	1790
1968	1802
1969	2006
1970	2162
1971	2405
1972	2752
1973	2528
1974	3040
1975	2972
1976	3397
1977	3294
1978	3650
1979	3628
1980	4129
1981	3801
1982	3999
1983	3724
1984	3800
1985	3657
1986	4228
1987	3987
1988	3857
1989	3778
1990	4359
1991	3903
1992	4594
1993	4854
1994	5242
1995	5314
1996	5228
1997	5632
1998	6095
1999	6404
2000	5841
2001	4808
2002	4174
2003	4278
2004	4391
2005	4506
2006	4193
2007	4015
2008	3564
2009	4187
2010	4163
2011	4359
2012	4834
2013	4484