Year Number of
1800 30010
1801 30010
1802 30010
1803 30010
1804 30010
1805 30010
1806 30010
1807 30010
1808 30010
1809 30010
1810 30010
1811 30030
1812 30050
1813 30090
1814 30150
1815 30210
1816 30300
1817 30390
1818 30500
1819 30620
1820 30760
1821 30910
1822 31080
1823 31260
1824 31460
1825 31670
1826 31900
1827 32140
1828 32390
1829 32670
1830 32960
1831 33260
1832 33570
1833 33880
1834 34190
1835 34510
1836 34820
1837 35150
1838 35470
1839 35800
1840 36130
1841 36460
1842 36800
1843 37140
1844 37480
1845 37830
1846 38180
1847 38530
1848 38890
1849 39250
1850 39610
1851 39980
1852 40360
1853 40740
1854 41130
1855 41520
1856 41910
1857 42300
1858 42700
1859 43110
1860 43520
1861 43930
1862 44340
1863 44760
1864 45180
1865 45610
1866 46040
1867 46480
1868 46920
1869 47360
1870 47810
1871 48260
1872 48720
1873 49160
1874 49630
1875 50100
1876 50570
1877 51040
1878 51520
1879 52000
1880 52500
1881 52980
1882 53480
1883 53990
1884 54490
1885 55000
1886 55520
1887 56040
1888 56570
1889 57100
1890 57640
1891 58190
1892 58740
1893 59290
1894 59850
1895 60410
1896 60970
1897 61530
1898 62090
1899 62640
1900 63190
1901 63730
1902 64260
1903 64790
1904 65320
1905 65830
1906 66350
1907 66840
1908 67340
1909 67830
1910 68320
1911 68800
1912 69290
1913 69770
1914 70260
1915 70760
1916 71250
1917 71750
1918 72230
1919 72720
1920 73210
1921 73170
1922 73130
1923 73090
1924 72980
1925 72880
1926 72880
1927 72780
1928 72790
1929 72790
1930 73640
1931 75560
1932 77500
1933 79450
1934 81420
1935 83400
1936 85390
1937 87400
1938 89430
1939 91470
1940 93520
1941 95590
1942 97680
1943 99780
1944 101900
1945 104000
1946 106200
1947 108300
1948 110500
1949 112700
1950 114900
1951 115600
1952 116600
1953 117600
1954 118700
1955 120000
1956 121300
1957 122700
1958 124200
1959 125800
1960 127500
1961 125200
1962 123100
1963 115900
1964 115200
1965 114700
1966 115000
1967 114500
1968 113800
1969 113400
1970 113900
1971 115200
1972 115700
1973 115500
1974 114900
1975 114100
1976 113500
1977 112100
1978 110400
1979 108800
1980 107800
1981 107500
1982 106600
1983 105400
1984 104000
1985 102600
1986 101900
1987 100500
1988 99150
1989 98190
1990 98210
1991 98550
1992 99600
1993 101200
1994 103300
1995 105400
1996 107700
1997 109200
1998 110000
1999 110000
2000 109600
2001 108300
2002 106200
2003 103600
2004 100900
2005 98400
2006 96450
2007 94830
2008 93490
2009 92000
2010 90660
2011 89450
2012 87740
2013 85930
2014 83960
2015 82710