Year Number of 1800 19960 1801 19960 1802 19960 1803 19960 1804 19960 1805 19960 1806 19960 1807 19960 1808 19960 1809 19960 1810 19960 1811 19970 1812 19980 1813 20000 1814 20030 1815 20070 1816 20110 1817 20160 1818 20220 1819 20280 1820 20360 1821 20440 1822 20530 1823 20620 1824 20730 1825 20840 1826 20960 1827 21090 1828 21220 1829 21360 1830 21520 1831 21680 1832 21840 1833 22000 1834 22160 1835 22330 1836 22500 1837 22660 1838 22830 1839 23000 1840 23170 1841 23340 1842 23510 1843 23670 1844 23830 1845 23990 1846 24140 1847 24300 1848 24450 1849 24600 1850 24740 1851 24920 1852 25090 1853 25260 1854 25430 1855 25600 1856 25760 1857 25920 1858 26080 1859 26230 1860 26380 1861 26530 1862 26680 1863 26830 1864 26980 1865 27140 1866 27290 1867 27440 1868 27600 1869 27750 1870 27910 1871 28060 1872 28220 1873 28380 1874 28540 1875 28700 1876 28860 1877 29020 1878 29180 1879 29340 1880 29510 1881 29670 1882 29840 1883 30000 1884 30170 1885 30340 1886 30500 1887 30670 1888 30840 1889 31020 1890 31190 1891 31360 1892 31540 1893 31710 1894 31890 1895 32060 1896 32250 1897 32440 1898 32640 1899 32850 1900 33190 1901 33420 1902 33620 1903 33860 1904 34120 1905 34390 1906 34650 1907 34900 1908 35160 1909 35410 1910 35660 1911 35910 1912 36160 1913 36530 1914 37040 1915 37670 1916 38320 1917 38980 1918 39590 1919 40210 1920 40760 1921 41180 1922 41520 1923 41860 1924 42200 1925 42540 1926 42890 1927 43240 1928 43590 1929 43940 1930 44340 1931 44730 1932 45110 1933 45500 1934 45880 1935 46250 1936 46620 1937 47000 1938 47360 1939 47720 1940 48080 1941 47390 1942 46690 1943 45990 1944 45430 1945 44730 1946 44870 1947 45010 1948 45150 1949 45280 1950 45410 1951 45320 1952 45480 1953 45650 1954 45840 1955 46040 1956 46260 1957 46500 1958 46750 1959 47010 1960 44510 1961 43940 1962 43810 1963 43920 1964 44040 1965 44050 1966 43900 1967 43500 1968 42920 1969 42320 1970 41860 1971 41430 1972 40900 1973 40320 1974 39750 1975 39250 1976 38810 1977 38370 1978 37910 1979 37430 1980 36960 1981 36470 1982 35870 1983 35150 1984 34340 1985 33510 1986 32660 1987 31710 1988 30750 1989 29820 1990 28920 1991 28040 1992 27220 1993 26390 1994 25550 1995 24730 1996 23910 1997 23020 1998 22080 1999 21120 2000 20140 2001 19160 2002 18130 2003 17150 2004 16170 2005 15280 2006 14440 2007 13640 2008 12920 2009 12240 2010 11660 2011 11110 2012 10620 2013 10130 2014 9743 2015 9415