Year Number of
1800 16330
1801 16330
1802 16330
1803 16330
1804 16330
1805 16330
1806 16330
1807 16330
1808 16330
1809 16330
1810 16330
1811 16340
1812 16350
1813 16360
1814 16390
1815 16410
1816 16440
1817 16480
1818 16520
1819 16570
1820 16630
1821 16690
1822 16750
1823 16820
1824 16900
1825 16980
1826 17070
1827 17160
1828 17260
1829 17370
1830 17480
1831 17600
1832 17710
1833 17830
1834 17950
1835 18070
1836 18190
1837 18320
1838 18440
1839 18560
1840 18690
1841 18810
1842 18940
1843 19070
1844 19190
1845 19320
1846 19450
1847 19580
1848 19720
1849 19850
1850 19980
1851 20120
1852 20260
1853 20410
1854 20550
1855 20700
1856 20840
1857 20990
1858 21140
1859 21290
1860 21440
1861 21590
1862 21740
1863 21900
1864 22050
1865 22210
1866 22360
1867 22520
1868 22680
1869 22840
1870 23000
1871 23160
1872 23330
1873 23490
1874 23650
1875 23820
1876 23990
1877 24160
1878 24330
1879 24500
1880 24670
1881 24840
1882 25020
1883 25190
1884 25370
1885 25550
1886 25730
1887 25910
1888 26090
1889 26280
1890 26460
1891 26650
1892 26840
1893 27030
1894 27220
1895 27410
1896 27600
1897 27780
1898 27970
1899 28150
1900 28330
1901 28500
1902 28670
1903 28840
1904 29010
1905 29170
1906 29330
1907 29480
1908 29620
1909 29770
1910 29920
1911 30060
1912 30200
1913 30340
1914 30480
1915 30620
1916 30760
1917 30900
1918 31030
1919 31160
1920 31290
1921 31420
1922 31560
1923 31690
1924 31820
1925 31960
1926 32090
1927 32320
1928 32550
1929 32880
1930 33430
1931 33980
1932 34440
1933 34780
1934 35220
1935 35560
1936 35990
1937 36320
1938 36750
1939 37180
1940 37490
1941 37910
1942 38210
1943 38630
1944 38920
1945 39330
1946 38920
1947 38620
1948 38850
1949 39080
1950 39310
1951 39250
1952 39380
1953 39540
1954 39700
1955 39880
1956 40070
1957 40020
1958 39950
1959 39950
1960 37550
1961 37630
1962 37430
1963 37000
1964 36580
1965 36270
1966 36090
1967 35800
1968 35450
1969 35300
1970 35370
1971 35650
1972 35950
1973 36280
1974 36660
1975 37110
1976 37630
1977 38000
1978 38330
1979 38640
1980 39090
1981 39610
1982 40120
1983 40640
1984 41310
1985 42200
1986 43270
1987 44400
1988 45510
1989 46100
1990 46000
1991 45970
1992 45280
1993 44150
1994 43020
1995 42280
1996 41360
1997 40580
1998 40120
1999 40200
2000 40920
2001 41200
2002 41770
2003 42320
2004 42600
2005 42290
2006 41890
2007 40880
2008 39340
2009 37500
2010 35440
2011 33370
2012 31290
2013 29340
2014 27730
2015 26470