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