Year Number of
1800 626600
1801 626600
1802 626600
1803 626600
1804 626600
1805 626600
1806 626600
1807 626600
1808 626600
1809 626600
1810 626600
1811 626900
1812 627500
1813 628300
1814 629400
1815 630800
1816 632500
1817 634500
1818 636800
1819 639300
1820 642200
1821 645400
1822 648900
1823 652700
1824 656800
1825 661200
1826 665900
1827 670900
1828 676300
1829 682000
1830 688000
1831 694400
1832 700800
1833 707300
1834 713800
1835 720400
1836 727000
1837 733800
1838 740500
1839 747400
1840 754300
1841 761200
1842 768300
1843 808600
1844 817700
1845 826900
1846 836200
1847 845600
1848 855100
1849 862600
1850 870300
1851 877900
1852 885700
1853 893500
1854 899700
1855 906000
1856 912300
1857 918600
1858 919600
1859 920600
1860 921500
1861 922500
1862 927400
1863 932300
1864 937200
1865 942200
1866 947200
1867 952200
1868 1100000
1869 1075000
1870 961100
1871 1116000
1872 1181000
1873 1116000
1874 1116000
1875 1141000
1876 1182000
1877 1093000
1878 1222000
1879 1095000
1880 1224000
1881 1066000
1882 1355000
1883 1264000
1884 1132000
1885 1199000
1886 1068000
1887 1136000
1888 1177000
1889 1277000
1890 1352000
1891 1403000
1892 1418000
1893 1277000
1894 1357000
1895 1473000
1896 1477000
1897 1398000
1898 1474000
1899 1293000
1900 1385000
1901 1497000
1902 1447000
1903 1413000
1904 1324000
1905 1451000
1906 1399000
1907 1274000
1908 1319000
1909 1344000
1910 1504000
1911 1317000
1912 1227000
1913 1260000
1914 1136000
1915 1141000
1916 1104000
1917 1067000
1918 1032000
1919 997400
1920 964300
1921 932200
1922 901200
1923 871200
1924 842200
1925 840900
1926 806600
1927 791100
1928 789400
1929 725900
1930 690500
1931 656600
1932 624200
1933 593300
1934 563900
1935 535800
1936 509000
1937 483500
1938 459200
1939 436000
1940 413900
1941 392900
1942 372800
1943 353700
1944 335500
1945 318100
1946 301600
1947 285900
1948 270900
1949 256600
1950 243100
1951 237700
1952 235200
1953 231300
1954 226000
1955 219500
1956 212000
1957 203500
1958 194100
1959 183800
1960 158800
1961 136100
1962 125900
1963 113400
1964 97340
1965 86310
1966 78590
1967 74060
1968 72220
1969 69000
1970 80110
1971 79150
1972 80710
1973 83380
1974 84910
1975 85050
1976 83300
1977 79730
1978 75490
1979 71810
1980 69780
1981 69670
1982 70740
1983 72490
1984 73930
1985 74070
1986 72820
1987 70510
1988 67430
1989 63340
1990 58900
1991 53680
1992 47560
1993 40900
1994 35040
1995 31200
1996 29080
1997 29640
1998 31470
1999 33120
2000 33640
2001 33120
2002 31640
2003 29530
2004 27450
2005 25570
2006 23890
2007 22340
2008 21140
2009 20220
2010 19610
2011 19310
2012 19140
2013 19260
2014 18920
2015 18540