Year Number of
1800 148500
1801 138300
1802 160000
1803 170500
1804 173300
1805 172000
1806 170800
1807 171100
1808 171400
1809 167800
1810 174800
1811 178200
1812 176000
1813 181800
1814 185400
1815 207900
1816 201600
1817 203700
1818 201900
1819 201200
1820 203200
1821 212500
1822 221600
1823 218700
1824 215300
1825 215100
1826 216700
1827 205900
1828 213800
1829 201500
1830 204100
1831 205100
1832 203200
1833 210500
1834 204100
1835 199900
1836 199100
1837 194300
1838 191700
1839 195400
1840 192000
1841 189100
1842 196400
1843 195100
1844 197800
1845 188200
1846 221900
1847 209100
1848 214900
1849 221000
1850 199800
1851 217900
1852 224000
1853 216200
1854 237800
1855 220400
1856 214800
1857 228100
1858 240700
1859 245900
1860 216800
1861 232500
1862 232500
1863 260400
1864 256800
1865 254300
1866 257600
1867 241800
1868 260200
1869 255200
1870 266400
1871 257700
1872 244900
1873 238100
1874 258900
1875 261400
1876 250400
1877 239000
1878 270400
1879 245000
1880 269300
1881 224700
1882 248800
1883 236600
1884 248300
1885 232100
1886 243500
1887 238700
1888 222800
1889 240000
1890 246100
1891 248700
1892 244800
1893 255900
1894 224900
1895 257400
1896 245000
1897 246500
1898 252100
1899 230900
1900 223700
1901 214100
1902 197600
1903 189400
1904 206100
1905 183000
1906 186000
1907 171600
1908 170600
1909 156700
1910 147900
1911 177500
1912 136800
1913 150400
1914 147000
1915 144600
1916 117600
1917 101500
1918 123700
1919 108000
1920 136100
1921 104600
1922 102300
1923 85970
1924 93230
1925 89680
1926 81070
1927 77480
1928 73580
1929 83700
1930 65840
1931 70300
1932 68460
1933 64810
1934 63960
1935 59640
1936 61770
1937 59740
1938 54620
1939 49030
1940 57540
1941 60630
1942 50790
1943 48330
1944 44520
1945 41280
1946 40200
1947 40200
1948 30190
1949 28800
1950 35800
1951 28590
1952 23680
1953 20700
1954 19370
1955 19220
1956 19790
1957 21050
1958 22570
1959 24170
1960 25420
1961 26170
1962 26370
1963 25910
1964 25150
1965 24110
1966 23150
1967 21980
1968 20870
1969 19720
1970 18580
1971 17480
1972 16370
1973 15190
1974 14120
1975 13150
1976 12190
1977 11430
1978 10710
1979 10120
1980 9637
1981 9335
1982 9107
1983 9040
1984 8921
1985 8861
1986 8719
1987 8473
1988 8091
1989 7627
1990 7113
1991 6624
1992 6233
1993 5926
1994 5603
1995 5409
1996 5184
1997 5020
1998 4849
1999 4692
2000 4557
2001 4362
2002 4254
2003 4248
2004 4161
2005 4207
2006 4317
2007 4489
2008 4583
2009 4618
2010 4533
2011 4354
2012 4079
2013 3755
2014 3460
2015 3235