Year Number of 1800 17860 1801 17860 1802 17860 1803 17860 1804 17860 1805 17860 1806 17860 1807 17860 1808 17860 1809 17860 1810 17860 1811 17870 1812 17880 1813 17900 1814 17930 1815 17960 1816 18000 1817 18050 1818 18110 1819 18170 1820 18240 1821 18310 1822 18390 1823 18480 1824 18580 1825 18690 1826 18800 1827 18920 1828 19040 1829 19180 1830 19320 1831 19470 1832 19620 1833 19780 1834 19930 1835 20080 1836 20240 1837 20400 1838 20550 1839 20710 1840 20870 1841 21040 1842 21200 1843 21360 1844 21530 1845 21700 1846 21870 1847 22040 1848 22210 1849 22380 1850 22550 1851 22700 1852 22860 1853 23020 1854 23170 1855 23330 1856 23490 1857 23650 1858 23810 1859 23970 1860 24130 1861 24300 1862 24460 1863 24660 1864 24830 1865 25000 1866 25160 1867 25340 1868 25510 1869 25680 1870 25860 1871 26030 1872 26210 1873 26380 1874 26560 1875 26740 1876 26920 1877 27100 1878 27280 1879 27460 1880 27650 1881 27830 1882 28020 1883 28210 1884 28400 1885 28590 1886 28780 1887 28970 1888 29170 1889 29370 1890 29560 1891 29760 1892 29970 1893 30170 1894 30370 1895 30570 1896 30780 1897 30980 1898 31170 1899 31370 1900 31560 1901 31740 1902 31920 1903 32100 1904 32270 1905 32440 1906 32600 1907 32760 1908 32920 1909 33070 1910 33220 1911 33360 1912 33510 1913 33650 1914 33800 1915 33940 1916 34090 1917 34230 1918 34430 1919 34610 1920 34790 1921 34980 1922 35160 1923 35350 1924 35540 1925 35700 1926 35870 1927 36040 1928 36210 1929 36380 1930 36750 1931 37110 1932 37470 1933 37830 1934 38180 1935 38530 1936 38880 1937 39220 1938 39570 1939 39910 1940 40240 1941 40580 1942 40910 1943 41240 1944 41570 1945 41890 1946 40420 1947 38980 1948 37550 1949 36270 1950 35770 1951 35070 1952 34580 1953 34140 1954 33750 1955 33410 1956 33100 1957 32840 1958 32610 1959 32410 1960 32880 1961 33400 1962 33930 1963 34530 1964 32900 1965 34230 1966 35530 1967 36660 1968 37550 1969 38230 1970 38710 1971 39170 1972 39370 1973 39520 1974 39920 1975 40760 1976 41540 1977 42340 1978 42970 1979 43340 1980 43330 1981 42990 1982 42190 1983 41250 1984 40610 1985 40460 1986 40810 1987 41760 1988 43110 1989 44520 1990 45710 1991 46870 1992 47420 1993 47420 1994 46960 1995 46220 1996 45340 1997 44320 1998 43260 1999 42450 2000 42010 2001 41280 2002 40820 2003 40550 2004 40380 2005 40160 2006 39880 2007 39540 2008 39260 2009 39070 2010 38780 2011 38670 2012 38300 2013 37830 2014 37340 2015 36970