Year	Number of
1800	1696
1801	1696
1802	1696
1803	1696
1804	1696
1805	1696
1806	1696
1807	1696
1808	1696
1809	1696
1810	1696
1811	1697
1812	1700
1813	1704
1814	1709
1815	1716
1816	1725
1817	1735
1818	1746
1819	1759
1820	1773
1821	1790
1822	1807
1823	1827
1824	1848
1825	1871
1826	1895
1827	1921
1828	1949
1829	1979
1830	2010
1831	2044
1832	2078
1833	2112
1834	2147
1835	2183
1836	2220
1837	2256
1838	2294
1839	2332
1840	2371
1841	2411
1842	2454
1843	2498
1844	2545
1845	2593
1846	2644
1847	2697
1848	2752
1849	2810
1850	2870
1851	2934
1852	3000
1853	3069
1854	3141
1855	3216
1856	3294
1857	3375
1858	3459
1859	3547
1860	3638
1861	3733
1862	3830
1863	3929
1864	4031
1865	4136
1866	4243
1867	4353
1868	4466
1869	4582
1870	4701
1871	4823
1872	4948
1873	5065
1874	5197
1875	5331
1876	5470
1877	5600
1878	5746
1879	5894
1880	6047
1881	6193
1882	6354
1883	6518
1884	6677
1885	6850
1886	7027
1887	7200
1888	7386
1889	7577
1890	7774
1891	7975
1892	8181
1893	8393
1894	8610
1895	8833
1896	9063
1897	9303
1898	9551
1899	9807
1900	10070
1901	10350
1902	10610
1903	10900
1904	11210
1905	11530
1906	11850
1907	12160
1908	12490
1909	12840
1910	13190
1911	13510
1912	13840
1913	14150
1914	14440
1915	14710
1916	14980
1917	15250
1918	15520
1919	15800
1920	16160
1921	16600
1922	17140
1923	17680
1924	18240
1925	18810
1926	19390
1927	19990
1928	20600
1929	21220
1930	22540
1931	23850
1932	25140
1933	26420
1934	27690
1935	28940
1936	29270
1937	29630
1938	29830
1939	30070
1940	30160
1941	29110
1942	28060
1943	27010
1944	25970
1945	24940
1946	23930
1947	22930
1948	21960
1949	21010
1950	17020
1951	17920
1952	18780
1953	19580
1954	20310
1955	21000
1956	21620
1957	22130
1958	22550
1959	22910
1960	23220
1961	23430
1962	23560
1963	23630
1964	23580
1965	23450
1966	23230
1967	22960
1968	22650
1969	22310
1970	21950
1971	21550
1972	21100
1973	20600
1974	20080
1975	19500
1976	18920
1977	18340
1978	17770
1979	17250
1980	16780
1981	16380
1982	16050
1983	15720
1984	15380
1985	14960
1986	14520
1987	14010
1988	13480
1989	12980
1990	12520
1991	12130
1992	11770
1993	11440
1994	11060
1995	10650
1996	10200
1997	9704
1998	9235
1999	8849
2000	8580
2001	8390
2002	8313
2003	8307
2004	8276
2005	8206
2006	8076
2007	7908
2008	7707
2009	7504
2010	7348
2011	7221
2012	7094
2013	7000
2014	6854
2015	6710