Year Number of
1800 21770
1801 21770
1802 21770
1803 21770
1804 21770
1805 21770
1806 21770
1807 21770
1808 21770
1809 21770
1810 21770
1811 21780
1812 21790
1813 21810
1814 21840
1815 21880
1816 21920
1817 21970
1818 22030
1819 22090
1820 22160
1821 22240
1822 22330
1823 22430
1824 22530
1825 22640
1826 22760
1827 22890
1828 23020
1829 23170
1830 23320
1831 23480
1832 23640
1833 23800
1834 23960
1835 24120
1836 24290
1837 24450
1838 24620
1839 24790
1840 24950
1841 25120
1842 25300
1843 25470
1844 25640
1845 25820
1846 25990
1847 26170
1848 26350
1849 26530
1850 26710
1851 26880
1852 27060
1853 27250
1854 27430
1855 27610
1856 27800
1857 27980
1858 28170
1859 28360
1860 28550
1861 28740
1862 28930
1863 29130
1864 29320
1865 29520
1866 29710
1867 29910
1868 30110
1869 30320
1870 30520
1871 30720
1872 30930
1873 31130
1874 31340
1875 31550
1876 31760
1877 31970
1878 32180
1879 32400
1880 32610
1881 32830
1882 33050
1883 33270
1884 33490
1885 33710
1886 33940
1887 34160
1888 34390
1889 34620
1890 34850
1891 35090
1892 35320
1893 35560
1894 35790
1895 36030
1896 36270
1897 36500
1898 36730
1899 36960
1900 37180
1901 37390
1902 37600
1903 37810
1904 38010
1905 38210
1906 38400
1907 38580
1908 38760
1909 38940
1910 39110
1911 39280
1912 39450
1913 39620
1914 39790
1915 39960
1916 40120
1917 40290
1918 40460
1919 40630
1920 40800
1921 40970
1922 41140
1923 41310
1924 41490
1925 41660
1926 41780
1927 41950
1928 42060
1929 42180
1930 42650
1931 43120
1932 43580
1933 44040
1934 44500
1935 44960
1936 45410
1937 45860
1938 46300
1939 46740
1940 47180
1941 47620
1942 48050
1943 48480
1944 48910
1945 49340
1946 49760
1947 49830
1948 49900
1949 49960
1950 50020
1951 50380
1952 51600
1953 52880
1954 54230
1955 55640
1956 56310
1957 50140
1958 51180
1959 52290
1960 53410
1961 54260
1962 54910
1963 55600
1964 56320
1965 57300
1966 58160
1967 59070
1968 60120
1969 61130
1970 62190
1971 62880
1972 63300
1973 63470
1974 63440
1975 63230
1976 62960
1977 62750
1978 62670
1979 62760
1980 63050
1981 63480
1982 63920
1983 64480
1984 65290
1985 66390
1986 67870
1987 69630
1988 71580
1989 73770
1990 76080
1991 78440
1992 80760
1993 83150
1994 85560
1995 87830
1996 90400
1997 92670
1998 94320
1999 95230
2000 95240
2001 94970
2002 93820
2003 92060
2004 90120
2005 88140
2006 86230
2007 84270
2008 82080
2009 80680
2010 79630
2011 78800
2012 77980
2013 77120
2014 76130
2015 75390