Year	Measure
1800	453.7
1801	454.2
1802	454.7
1803	455.3
1804	455.8
1805	456.3
1806	456.8
1807	457.3
1808	457.8
1809	458.3
1810	458.8
1811	459.3
1812	459.9
1813	460.4
1814	460.9
1815	461.4
1816	461.9
1817	462.4
1818	463
1819	463.5
1820	464
1821	464.5
1822	465
1823	465.5
1824	466.1
1825	466.6
1826	467.1
1827	467.6
1828	468.2
1829	468.7
1830	469.2
1831	469.7
1832	470.3
1833	470.8
1834	471.3
1835	471.8
1836	472.4
1837	472.9
1838	473.4
1839	474
1840	474.5
1841	475
1842	475.5
1843	476.1
1844	476.6
1845	477.1
1846	477.7
1847	478.2
1848	478.7
1849	479.3
1850	479.8
1851	480.4
1852	480.9
1853	481.4
1854	482
1855	482.5
1856	483
1857	483.6
1858	484.1
1859	484.7
1860	485.2
1861	485.8
1862	486.3
1863	486.8
1864	487.4
1865	487.9
1866	488.5
1867	489
1868	489.6
1869	490.1
1870	490.7
1871	491.2
1872	491.8
1873	492.3
1874	492.9
1875	493.4
1876	494
1877	494.5
1878	495.1
1879	495.6
1880	496.2
1881	496.7
1882	497.3
1883	497.9
1884	498.4
1885	499
1886	499.5
1887	500.1
1888	500.6
1889	501.2
1890	501.8
1891	502.3
1892	502.9
1893	503.5
1894	504
1895	504.6
1896	505.1
1897	505.7
1898	506.3
1899	506.8
1900	507.4
1901	508
1902	508.5
1903	509.1
1904	509.7
1905	510.3
1906	510.8
1907	511.4
1908	512
1909	512.5
1910	513.1
1911	513.7
1912	514.3
1913	514.8
1914	515.4
1915	516
1916	516.6
1917	517.1
1918	517.7
1919	518.3
1920	518.9
1921	519.5
1922	520
1923	520.6
1924	521.2
1925	521.8
1926	522.4
1927	523
1928	523.5
1929	524.1
1930	524.7
1931	525.3
1932	525.9
1933	526.5
1934	527.1
1935	527.7
1936	528.3
1937	528.8
1938	529.4
1939	530
1940	530.6
1941	531.2
1942	531.8
1943	532.4
1944	533
1945	533.6
1946	534.2
1947	534.8
1948	535.4
1949	536
1950	536.6
1951	556.6
1952	562.8
1953	572.9
1954	592.8
1955	598.6
1956	607.8
1957	616.4
1958	619.4
1959	639.7
1960	643.7
1961	613.3
1962	681.7
1963	599.5
1964	515.5
1965	538.1
1966	559.7
1967	583
1968	606.5
1969	653.3
1970	703.2
1971	691.2
1972	673.8
1973	674.6
1974	686.9
1975	790.5
1976	751.8
1977	764.5
1978	811.4
1979	859.7
1980	934.1
1981	962.6
1982	1006
1983	1030
1984	959.3
1985	976.6
1986	1004
1987	967.5
1988	905.4
1989	897.2
1990	868
1991	808.8
1992	840.9
1993	753.9
1994	436.3
1995	663.3
1996	710.7
1997	673.1
1998	734.5
1999	773
2000	803.3
2001	838.6
2002	896.4
2003	883.2
2004	896.5
2005	927.6
2006	995.2
2007	1029
2008	1142
2009	1189
2010	1248
2011	1324
2012	1400
2013	1439
2014	1515
2015	1596
2016	1680
2017	1769
2018	1862
2019	1961