Year Number of 1800 176900 1801 177200 1802 177400 1803 177700 1804 178000 1805 178200 1806 178500 1807 178800 1808 179000 1809 179300 1810 179600 1811 179900 1812 180200 1813 180500 1814 180800 1815 181200 1816 181500 1817 181900 1818 182300 1819 182700 1820 183100 1821 183600 1822 184000 1823 184500 1824 185000 1825 185500 1826 186000 1827 186500 1828 187100 1829 187600 1830 188200 1831 188800 1832 189400 1833 190000 1834 190600 1835 191200 1836 191800 1837 192400 1838 193000 1839 193600 1840 194200 1841 194800 1842 195400 1843 196100 1844 196700 1845 197300 1846 197900 1847 198500 1848 199200 1849 199800 1850 200400 1851 201100 1852 201700 1853 202300 1854 203000 1855 203600 1856 204300 1857 204900 1858 205500 1859 206200 1860 206800 1861 207500 1862 208200 1863 209000 1864 209700 1865 210500 1866 211300 1867 212200 1868 213000 1869 213900 1870 214900 1871 215800 1872 216800 1873 217700 1874 218700 1875 219800 1876 221000 1877 222000 1878 223300 1879 224500 1880 225800 1881 227000 1882 228300 1883 229600 1884 230800 1885 232100 1886 233400 1887 234700 1888 236000 1889 237400 1890 238700 1891 240000 1892 241400 1893 242700 1894 244100 1895 245400 1896 246800 1897 248100 1898 249400 1899 250600 1900 251900 1901 252700 1902 253900 1903 254600 1904 255700 1905 256400 1906 257500 1907 258100 1908 258600 1909 259500 1910 260100 1911 260900 1912 261400 1913 260700 1914 259000 1915 255900 1916 253100 1917 250000 1918 247200 1919 244200 1920 241200 1921 238500 1922 235600 1923 234100 1924 233500 1925 234200 1926 234700 1927 235900 1928 238200 1929 240800 1930 247200 1931 252800 1932 259100 1933 264500 1934 270700 1935 276000 1936 281200 1937 287300 1938 300800 1939 314700 1940 329100 1941 343800 1942 360100 1943 351100 1944 350400 1945 349500 1946 348400 1947 347300 1948 345900 1949 344500 1950 343000 1951 339000 1952 338400 1953 331800 1954 338200 1955 338800 1956 336200 1957 328100 1958 317100 1959 305700 1960 296200 1961 288300 1962 283500 1963 280700 1964 277800 1965 273900 1966 269100 1967 263200 1968 257100 1969 251600 1970 247400 1971 244200 1972 241100 1973 238100 1974 234300 1975 229500 1976 224000 1977 217100 1978 209300 1979 201200 1980 193000 1981 184300 1982 175500 1983 166400 1984 157200 1985 147800 1986 138400 1987 129000 1988 119800 1989 111300 1990 103600 1991 96660 1992 90400 1993 84650 1994 79670 1995 74970 1996 70820 1997 67140 1998 63420 1999 59650 2000 55720 2001 51560 2002 47340 2003 43150 2004 39250 2005 36060 2006 33110 2007 30630 2008 28460 2009 26600 2010 24980 2011 23690 2012 22470 2013 21430 2014 20130 2015 18940