Year Number of
1800 18880
1801 18960
1802 19040
1803 19120
1804 19200
1805 19280
1806 19360
1807 19440
1808 19520
1809 19610
1810 19700
1811 19780
1812 19870
1813 19960
1814 20040
1815 20140
1816 20230
1817 20320
1818 20420
1819 20520
1820 20620
1821 20720
1822 20820
1823 20930
1824 21040
1825 21150
1826 21260
1827 21370
1828 21490
1829 21600
1830 21720
1831 21850
1832 21970
1833 22100
1834 22230
1835 22360
1836 22490
1837 22630
1838 22770
1839 22910
1840 23050
1841 23200
1842 23340
1843 23480
1844 23630
1845 23770
1846 23920
1847 24070
1848 24220
1849 24360
1850 24510
1851 24040
1852 24020
1853 23230
1854 22780
1855 21620
1856 24170
1857 24440
1858 25880
1859 27450
1860 27100
1861 26890
1862 27290
1863 28400
1864 28580
1865 28340
1866 28970
1867 27390
1868 26190
1869 26390
1870 25000
1871 24620
1872 24240
1873 23770
1874 23940
1875 24630
1876 24990
1877 25340
1878 24460
1879 22020
1880 21150
1881 22180
1882 19820
1883 18020
1884 17770
1885 18500
1886 17930
1887 17600
1888 16570
1889 17750
1890 16460
1891 19040
1892 16450
1893 17420
1894 17480
1895 17270
1896 15780
1897 16330
1898 18150
1899 17100
1900 18580
1901 17760
1902 16190
1903 15830
1904 17240
1905 15940
1906 15670
1907 14540
1908 13590
1909 14140
1910 13050
1911 14090
1912 11060
1913 11110
1914 10270
1915 8509
1916 7538
1917 7445
1918 9101
1919 7963
1920 8676
1921 6917
1922 6432
1923 5772
1924 5724
1925 5512
1926 5180
1927 5129
1928 5013
1929 4678
1930 4574
1931 4473
1932 4633
1933 4281
1934 4232
1935 4493
1936 4317
1937 4427
1938 4133
1939 4063
1940 4645
1941 4130
1942 3903
1943 3979
1944 4192
1945 4059
1946 3952
1947 3850
1948 3569
1949 3459
1950 3365
1951 3049
1952 2822
1953 2683
1954 2590
1955 2532
1956 2481
1957 2460
1958 2464
1959 2498
1960 2549
1961 2598
1962 2625
1963 2612
1964 2551
1965 2459
1966 2356
1967 2236
1968 2106
1969 1975
1970 1832
1971 1692
1972 1543
1973 1399
1974 1253
1975 1117
1976 1001
1977 904
1978 826
1979 767
1980 735
1981 712
1982 706
1983 704
1984 706
1985 701
1986 696
1987 681
1988 655
1989 634
1990 622
1991 611
1992 600
1993 590
1994 573
1995 553
1996 525
1997 506
1998 474
1999 450
2000 430
2001 418
2002 401
2003 382
2004 372
2005 367
2006 363
2007 356
2008 358
2009 360
2010 361
2011 359
2012 356
2013 351
2014 338
2015 334