Year	Number of
1800	10670
1801	10670
1802	10670
1803	10670
1804	10670
1805	10670
1806	10690
1807	10690
1808	10690
1809	10690
1810	10690
1811	10690
1812	10700
1813	10720
1814	10740
1815	10760
1816	10790
1817	10830
1818	10890
1819	10930
1820	10990
1821	11040
1822	11110
1823	11180
1824	11250
1825	11330
1826	11420
1827	11510
1828	11600
1829	11730
1830	11840
1831	11950
1832	12070
1833	12190
1834	12310
1835	12430
1836	12550
1837	12670
1838	12800
1839	12920
1840	13070
1841	13200
1842	13320
1843	13460
1844	13590
1845	13720
1846	13850
1847	13990
1848	14130
1849	14260
1850	14400
1851	14540
1852	14710
1853	14860
1854	15000
1855	15150
1856	15300
1857	15450
1858	15600
1859	15750
1860	15910
1861	16060
1862	16220
1863	16410
1864	16570
1865	16730
1866	16900
1867	17060
1868	17230
1869	17400
1870	17570
1871	17740
1872	17920
1873	18090
1874	18290
1875	18470
1876	18650
1877	18830
1878	19020
1879	19200
1880	19390
1881	19580
1882	19770
1883	19960
1884	20160
1885	20350
1886	20590
1887	20780
1888	20990
1889	21200
1890	21400
1891	21610
1892	21830
1893	22040
1894	22260
1895	22470
1896	22690
1897	22940
1898	23160
1899	23380
1900	23590
1901	23800
1902	24000
1903	24210
1904	24420
1905	24620
1906	24820
1907	25010
1908	25250
1909	25440
1910	25640
1911	25840
1912	26040
1913	26240
1914	26440
1915	26650
1916	26860
1917	27060
1918	27270
1919	27480
1920	27740
1921	27950
1922	28170
1923	28380
1924	28600
1925	28820
1926	29040
1927	29310
1928	29530
1929	29760
1930	30030
1931	30290
1932	30560
1933	30820
1934	31090
1935	31350
1936	31610
1937	31860
1938	32120
1939	32380
1940	32630
1941	32520
1942	32420
1943	32310
1944	32190
1945	31510
1946	31470
1947	31470
1948	31450
1949	31460
1950	27930
1951	28440
1952	29020
1953	29520
1954	29970
1955	30390
1956	30810
1957	31000
1958	31060
1959	31140
1960	31350
1961	31600
1962	31820
1963	32040
1964	32250
1965	32480
1966	32670
1967	32890
1968	33110
1969	33380
1970	33760
1971	34140
1972	34420
1973	34620
1974	34740
1975	34850
1976	34950
1977	35020
1978	35150
1979	35400
1980	35760
1981	36200
1982	36620
1983	37030
1984	37420
1985	37820
1986	38200
1987	38450
1988	38640
1989	38870
1990	39150
1991	39320
1992	39470
1993	39680
1994	39890
1995	40090
1996	40460
1997	40710
1998	40820
1999	40870
2000	40950
2001	40860
2002	40680
2003	40480
2004	40230
2005	39940
2006	39690
2007	39400
2008	39140
2009	38920
2010	38710
2011	38510
2012	38240
2013	37980
2014	37510
2015	37090
