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