Year	Measure
1800	413.8
1801	414
1802	414.2
1803	414.3
1804	414.5
1805	414.7
1806	414.8
1807	415
1808	415.2
1809	415.4
1810	415.5
1811	415.7
1812	415.9
1813	416
1814	416.2
1815	416.4
1816	416.6
1817	416.7
1818	416.9
1819	417.1
1820	417.2
1821	417.4
1822	417.6
1823	417.8
1824	417.9
1825	418.1
1826	418.3
1827	418.4
1828	418.6
1829	418.8
1830	419
1831	419.1
1832	419.3
1833	419.5
1834	419.7
1835	419.8
1836	420
1837	420.2
1838	420.3
1839	420.5
1840	420.7
1841	420.9
1842	421
1843	421.2
1844	421.4
1845	421.6
1846	421.7
1847	421.9
1848	422.1
1849	422.3
1850	422.4
1851	422.6
1852	422.8
1853	422.9
1854	423.1
1855	423.3
1856	423.5
1857	423.6
1858	423.8
1859	424
1860	424.2
1861	424.3
1862	424.5
1863	424.7
1864	424.9
1865	425
1866	425.2
1867	425.4
1868	425.6
1869	425.7
1870	425.9
1871	426.1
1872	426.3
1873	426.4
1874	426.6
1875	426.8
1876	427
1877	427.2
1878	427.3
1879	427.5
1880	427.7
1881	427.9
1882	428
1883	428.2
1884	428.4
1885	428.6
1886	428.7
1887	428.9
1888	429.1
1889	429.3
1890	429.4
1891	429.6
1892	429.8
1893	430
1894	430.2
1895	430.3
1896	430.5
1897	430.7
1898	430.9
1899	431
1900	431.2
1901	431.4
1902	431.6
1903	431.8
1904	431.9
1905	432.1
1906	432.3
1907	432.5
1908	432.6
1909	432.8
1910	433
1911	433.2
1912	433.4
1913	433.5
1914	433.7
1915	433.9
1916	434.1
1917	434.2
1918	434.4
1919	434.6
1920	434.8
1921	435
1922	435.1
1923	435.3
1924	435.5
1925	435.7
1926	435.9
1927	436
1928	436.2
1929	436.4
1930	436.6
1931	436.8
1932	436.9
1933	437.1
1934	437.3
1935	437.5
1936	437.7
1937	437.8
1938	438
1939	438.2
1940	438.4
1941	438.6
1942	438.7
1943	438.9
1944	439.1
1945	439.3
1946	439.5
1947	439.6
1948	439.8
1949	440
1950	440.2
1951	458.3
1952	464.9
1953	476.1
1954	494
1955	501.7
1956	512.1
1957	522.7
1958	533
1959	538.6
1960	567.4
1961	562.5
1962	638.3
1963	696.2
1964	740.2
1965	737.5
1966	736.6
1967	798.6
1968	779.8
1969	772
1970	773.2
1971	686.8
1972	801.6
1973	989.9
1974	1027
1975	920.9
1976	1047
1977	1200
1978	1399
1979	1214
1980	1150
1981	1130
1982	1140
1983	1130
1984	1153
1985	1165
1986	1199
1987	1178
1988	1261
1989	1309
1990	1364
1991	1374
1992	1450
1993	1473
1994	1520
1995	1523
1996	1582
1997	1607
1998	1610
1999	1629
2000	1687
2001	1736
2002	1727
2003	1791
2004	1816
2005	1849
2006	1910
2007	1981
2008	2067
2009	2104
2010	2200
2011	2268
2012	2399
2013	2531
2014	2665
2015	2805
2016	2940
2017	3091
2018	3253
2019	3411