Year	Measure
1800	1591
1801	1591
1802	1591
1803	1591
1804	1591
1805	1591
1806	1591
1807	1591
1808	1591
1809	1591
1810	1591
1811	1591
1812	1591
1813	1591
1814	1591
1815	1591
1816	1591
1817	1591
1818	1591
1819	1591
1820	1591
1821	1597
1822	1602
1823	1607
1824	1612
1825	1617
1826	1623
1827	1628
1828	1633
1829	1639
1830	1644
1831	1649
1832	1655
1833	1660
1834	1665
1835	1671
1836	1676
1837	1682
1838	1687
1839	1693
1840	1698
1841	1704
1842	1709
1843	1715
1844	1720
1845	1726
1846	1731
1847	1737
1848	1743
1849	1748
1850	1754
1851	1760
1852	1765
1853	1771
1854	1777
1855	1783
1856	1788
1857	1794
1858	1800
1859	1806
1860	1812
1861	1818
1862	1824
1863	1830
1864	1835
1865	1841
1866	1847
1867	1853
1868	1859
1869	1865
1870	1872
1871	1878
1872	1884
1873	1890
1874	1896
1875	1902
1876	1908
1877	1914
1878	1921
1879	1927
1880	1933
1881	1939
1882	1946
1883	1952
1884	1958
1885	1965
1886	1971
1887	1978
1888	1984
1889	1990
1890	1997
1891	2003
1892	2010
1893	2016
1894	2023
1895	2030
1896	2036
1897	2043
1898	2049
1899	2056
1900	2063
1901	2069
1902	2076
1903	2083
1904	2090
1905	2096
1906	2103
1907	2110
1908	2117
1909	2124
1910	2131
1911	2138
1912	2145
1913	2152
1914	2158
1915	2165
1916	2173
1917	2180
1918	2187
1919	2194
1920	2201
1921	2208
1922	2215
1923	2222
1924	2230
1925	2237
1926	2244
1927	2251
1928	2259
1929	2266
1930	2640
1931	3075
1932	3582
1933	4173
1934	4862
1935	5664
1936	6598
1937	7686
1938	8954
1939	10430
1940	12150
1941	14160
1942	16490
1943	19210
1944	22380
1945	26070
1946	30370
1947	35380
1948	41210
1949	48010
1950	55930
1951	56810
1952	57700
1953	58610
1954	59530
1955	60460
1956	61410
1957	62380
1958	63360
1959	64350
1960	65360
1961	66390
1962	67430
1963	68490
1964	69570
1965	70660
1966	71770
1967	72900
1968	74040
1969	75200
1970	76390
1971	80610
1972	85130
1973	89580
1974	96080
1975	92590
1976	106900
1977	114100
1978	117500
1979	139000
1980	125100
1981	97240
1982	98170
1983	95920
1984	93840
1985	89890
1986	85020
1987	84290
1988	82820
1989	79640
1990	79540
1991	80450
1992	77350
1993	75610
1994	74910
1995	75170
1996	75880
1997	77030
1998	74750
1999	75210
2000	75540
2001	75810
2002	76930
2003	77370
2004	76030
2005	74670
2006	76670
2007	75640
2008	73190
2009	70930
2010	71510
2011	71990
2012	71510
2013	69550
2014	72170
2015	73170
2016	74690
2017	77560
2018	80650
2019	82160