Year Number of
1800 17590
1801 17600
1802 17610
1803 17630
1804 17640
1805 17650
1806 17660
1807 17680
1808 17690
1809 17700
1810 17720
1811 17740
1812 17760
1813 17780
1814 17820
1815 17850
1816 17890
1817 17940
1818 17980
1819 18040
1820 18100
1821 18160
1822 18230
1823 18300
1824 18380
1825 18460
1826 18550
1827 18640
1828 18740
1829 18840
1830 18950
1831 19060
1832 19180
1833 19290
1834 19400
1835 19520
1836 19630
1837 19750
1838 19870
1839 19990
1840 20100
1841 20220
1842 20340
1843 20460
1844 20590
1845 20710
1846 20830
1847 20950
1848 21080
1849 21200
1850 21330
1851 21460
1852 21600
1853 21730
1854 21870
1855 22000
1856 22140
1857 22280
1858 22420
1859 22560
1860 22700
1861 22850
1862 23000
1863 23160
1864 23330
1865 23500
1866 23680
1867 23870
1868 24070
1869 24270
1870 24480
1871 24700
1872 24930
1873 25130
1874 25370
1875 25620
1876 25880
1877 26130
1878 26420
1879 26710
1880 27010
1881 27300
1882 27610
1883 27920
1884 28220
1885 28540
1886 28850
1887 29170
1888 29500
1889 29820
1890 30160
1891 30490
1892 30830
1893 31180
1894 31520
1895 31870
1896 32220
1897 32580
1898 32930
1899 33270
1900 33620
1901 33970
1902 34300
1903 34650
1904 34990
1905 35320
1906 35660
1907 35980
1908 36310
1909 36640
1910 36960
1911 37290
1912 37610
1913 38020
1914 38520
1915 39100
1916 39700
1917 40300
1918 40890
1919 41500
1920 42120
1921 42740
1922 43370
1923 44010
1924 44380
1925 44620
1926 45000
1927 45240
1928 45620
1929 45870
1930 46550
1931 47200
1932 47700
1933 48320
1934 48780
1935 49380
1936 49790
1937 50360
1938 50740
1939 51270
1940 51620
1941 52120
1942 52440
1943 52900
1944 52520
1945 52280
1946 51860
1947 51580
1948 51110
1949 50790
1950 50290
1951 50360
1952 50800
1953 51230
1954 51650
1955 52060
1956 52460
1957 52860
1958 53250
1959 53630
1960 54010
1961 54380
1962 52590
1963 51880
1964 50670
1965 48940
1966 46450
1967 43390
1968 40190
1969 37240
1970 34880
1971 32900
1972 31370
1973 30040
1974 28820
1975 27500
1976 26120
1977 24730
1978 23390
1979 22160
1980 21040
1981 19940
1982 18880
1983 17910
1984 16950
1985 16060
1986 15300
1987 14610
1988 13980
1989 13310
1990 12620
1991 11840
1992 10960
1993 10030
1994 9122
1995 8305
1996 7568
1997 6926
1998 6348
1999 5851
2000 5394
2001 4988
2002 4637
2003 4300
2004 4039
2005 3811
2006 3636
2007 3493
2008 3378
2009 3270
2010 3199
2011 3137
2012 3110
2013 3087
2014 3026
2015 2919