Year	Number of
1800	18110
1801	18110
1802	18110
1803	18110
1804	18110
1805	18110
1806	18110
1807	18110
1808	18110
1809	18110
1810	18110
1811	18120
1812	18130
1813	18160
1814	18190
1815	18220
1816	18270
1817	18330
1818	18390
1819	18460
1820	18540
1821	18630
1822	18720
1823	18830
1824	18940
1825	19060
1826	19190
1827	19330
1828	19480
1829	19640
1830	19800
1831	19980
1832	20150
1833	20330
1834	20510
1835	20690
1836	20870
1837	21060
1838	21240
1839	21430
1840	21620
1841	21810
1842	22000
1843	22200
1844	22400
1845	22590
1846	22790
1847	22990
1848	23200
1849	23400
1850	23610
1851	23820
1852	24030
1853	24240
1854	24450
1855	24670
1856	24890
1857	25110
1858	25330
1859	25560
1860	25780
1861	26010
1862	26240
1863	26470
1864	26700
1865	26940
1866	27180
1867	27420
1868	27660
1869	27910
1870	28150
1871	28400
1872	28650
1873	28900
1874	29150
1875	29410
1876	29670
1877	29930
1878	30190
1879	30460
1880	30730
1881	33070
1882	33990
1883	34910
1884	35850
1885	36800
1886	36080
1887	35340
1888	34590
1889	33820
1890	33030
1891	34030
1892	35050
1893	36080
1894	37120
1895	38180
1896	37960
1897	37740
1898	37500
1899	37250
1900	36990
1901	37020
1902	37040
1903	37050
1904	37050
1905	37040
1906	37030
1907	37000
1908	36970
1909	36940
1910	36900
1911	36840
1912	36790
1913	36740
1914	36680
1915	37620
1916	38570
1917	39540
1918	40510
1919	41490
1920	41300
1921	40040
1922	38820
1923	37610
1924	36430
1925	35040
1926	33690
1927	32360
1928	31070
1929	29800
1930	28540
1931	27420
1932	26330
1933	25270
1934	24240
1935	23230
1936	22260
1937	21310
1938	20380
1939	19490
1940	18620
1941	17720
1942	16860
1943	16020
1944	15220
1945	14430
1946	13680
1947	12950
1948	12240
1949	11560
1950	10850
1951	10480
1952	10010
1953	9574
1954	9157
1955	8762
1956	8386
1957	8030
1958	7688
1959	7360
1960	7041
1961	6339
1962	5700
1963	5121
1964	4598
1965	4134
1966	3729
1967	3379
1968	3079
1969	2820
1970	2594
1971	2465
1972	2343
1973	2224
1974	2109
1975	1994
1976	1885
1977	1782
1978	1685
1979	1594
1980	1507
1981	1385
1982	1345
1983	1304
1984	1261
1985	1187
1986	1105
1987	999
1988	900
1989	802
1990	714
1991	639
1992	572
1993	522
1994	482
1995	458
1996	448
1997	453
1998	456
1999	454
2000	437
2001	403
2002	355
2003	304
2004	263
2005	240
2006	234
2007	242
2008	255
2009	263
2010	263
2011	248
2012	229
2013	205
2014	182
2015	165