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