Year	Measure
1800	693.2
1801	693.2
1802	693.2
1803	693.2
1804	693.2
1805	693.2
1806	693.2
1807	693.2
1808	693.2
1809	693.2
1810	693.2
1811	693.2
1812	693.2
1813	693.2
1814	693.2
1815	693.2
1816	693.2
1817	693.2
1818	693.2
1819	693.2
1820	693.2
1821	693.2
1822	693.2
1823	693.2
1824	693.2
1825	693.2
1826	693.2
1827	693.2
1828	693.2
1829	693.2
1830	693.2
1831	693.2
1832	693.2
1833	693.2
1834	693.2
1835	693.2
1836	693.2
1837	693.2
1838	693.2
1839	693.2
1840	693.2
1841	770
1842	855.3
1843	950.2
1844	1055
1845	1172
1846	1302
1847	1447
1848	1607
1849	1785
1850	1983
1851	2118
1852	2263
1853	2417
1854	2581
1855	2757
1856	2945
1857	3146
1858	3360
1859	3589
1860	3833
1861	3965
1862	4101
1863	4242
1864	4387
1865	4538
1866	4693
1867	4854
1868	5021
1869	5193
1870	5371
1871	5467
1872	6105
1873	6639
1874	6660
1875	6391
1876	6278
1877	6901
1878	7401
1879	6185
1880	6492
1881	6524
1882	6318
1883	6056
1884	6416
1885	6216
1886	6241
1887	6246
1888	6159
1889	6414
1890	6508
1891	6466
1892	6586
1893	6565
1894	6202
1895	6311
1896	6911
1897	6845
1898	6906
1899	7002
1900	7448
1901	7319
1902	7691
1903	8192
1904	7920
1905	8405
1906	8938
1907	9253
1908	8378
1909	8267
1910	9213
1911	9520
1912	9027
1913	8929
1914	8992
1915	8966
1916	8873
1917	8679
1918	8510
1919	9154
1920	9776
1921	8886
1922	8389
1923	8915
1924	8912
1925	9170
1926	8500
1927	8115
1928	8909
1929	9119
1930	8595
1931	7755
1932	7499
1933	7930
1934	8262
1935	8594
1936	10120
1937	10570
1938	11200
1939	11190
1940	10920
1941	10620
1942	11720
1943	12010
1944	11900
1945	12010
1946	12410
1947	13600
1948	12010
1949	13030
1950	14650
1951	13260
1952	13510
1953	13610
1954	15150
1955	15120
1956	15600
1957	15670
1958	15920
1959	16690
1960	16400
1961	16890
1962	16860
1963	17560
1964	18050
1965	18850
1966	19690
1967	18510
1968	18270
1969	19950
1970	19390
1971	20060
1972	20540
1973	21530
1974	22320
1975	21640
1976	21920
1977	20780
1978	20850
1979	21290
1980	21400
1981	22330
1982	22570
1983	22930
1984	23820
1985	23870
1986	24290
1987	24330
1988	24160
1989	24300
1990	24100
1991	23520
1992	23500
1993	24750
1994	25740
1995	26440
1996	26960
1997	26940
1998	26720
1999	27760
2000	28020
2001	28700
2002	29680
2003	30370
2004	31150
2005	31420
2006	31990
2007	32770
2008	32200
2009	31310
2010	31490
2011	31680
2012	32290
2013	32760
2014	33540
2015	34270
2016	34880
2017	35490
2018	36080
2019	36710