Year Number of 1800 152200 1801 154600 1802 157100 1803 159500 1804 162100 1805 164700 1806 167400 1807 169900 1808 172600 1809 175400 1810 179400 1811 182300 1812 185200 1813 188400 1814 191800 1815 195300 1816 198700 1817 202600 1818 206600 1819 210700 1820 260600 1821 265700 1822 271000 1823 276600 1824 282400 1825 288400 1826 294700 1827 301100 1828 307800 1829 314600 1830 321600 1831 328300 1832 335100 1833 342200 1834 349400 1835 356800 1836 364300 1837 372000 1838 379900 1839 387900 1840 396100 1841 401700 1842 407400 1843 413300 1844 419100 1845 425100 1846 431100 1847 437100 1848 443100 1849 449200 1850 455300 1851 458100 1852 460600 1853 462800 1854 464700 1855 466200 1856 467400 1857 468200 1858 468700 1859 468900 1860 468700 1861 475900 1862 483100 1863 490200 1864 497100 1865 504000 1866 510800 1867 517400 1868 524000 1869 530500 1870 536900 1871 554200 1872 571900 1873 588900 1874 607300 1875 626200 1876 645500 1877 664200 1878 684500 1879 705300 1880 726600 1881 715600 1882 705000 1883 693700 1884 681400 1885 669100 1886 656200 1887 642800 1888 628500 1889 623700 1890 616400 1891 613400 1892 610000 1893 608600 1894 604500 1895 600100 1896 597800 1897 593000 1898 587900 1899 582600 1900 579400 1901 575900 1902 553100 1903 556100 1904 585200 1905 574200 1906 584500 1907 586900 1908 551200 1909 534300 1910 568600 1911 534200 1912 522700 1913 539700 1914 527600 1915 514800 1916 535300 1917 534100 1918 707700 1919 466000 1920 496700 1921 443700 1922 421200 1923 436700 1924 414500 1925 376400 1926 342100 1927 312800 1928 278000 1929 249600 1930 236700 1931 224400 1932 212600 1933 201400 1934 223500 1935 214800 1936 220200 1937 216900 1938 208300 1939 191400 1940 191200 1941 189400 1942 174400 1943 173600 1944 165000 1945 160400 1946 157400 1947 146400 1948 141200 1949 142900 1950 144100 1951 138800 1952 135200 1953 133100 1954 131900 1955 131900 1956 132400 1957 133200 1958 133900 1959 133100 1960 131200 1961 127400 1962 122200 1963 116000 1964 109600 1965 103500 1966 97550 1967 92050 1968 86710 1969 82050 1970 78080 1971 74390 1972 71480 1973 69010 1974 66600 1975 64010 1976 61200 1977 58530 1978 55780 1979 53500 1980 51780 1981 50360 1982 49400 1983 48430 1984 47750 1985 47270 1986 46670 1987 46260 1988 45370 1989 44430 1990 43140 1991 42280 1992 41040 1993 39750 1994 38700 1995 37470 1996 35980 1997 34290 1998 32980 1999 32270 2000 31520 2001 31610 2002 32070 2003 32670 2004 33570 2005 33700 2006 33520 2007 32980 2008 32170 2009 30840 2010 29940 2011 28690 2012 27790 2013 26600 2014 25630 2015 24920