Year Number of
1800 1647
1801 1647
1802 1647
1803 1647
1804 1647
1805 1647
1806 1647
1807 1647
1808 1647
1809 1647
1810 1647
1811 1647
1812 1647
1813 1647
1814 1647
1815 1647
1816 1647
1817 1647
1818 1647
1819 1647
1820 1647
1821 1647
1822 1647
1823 1647
1824 1647
1825 1647
1826 1647
1827 1647
1828 1647
1829 1647
1830 1647
1831 1647
1832 1647
1833 1647
1834 1647
1835 1647
1836 1647
1837 1647
1838 1647
1839 1647
1840 1647
1841 1647
1842 1647
1843 1647
1844 1647
1845 1647
1846 1647
1847 1647
1848 1647
1849 1647
1850 1647
1851 1647
1852 1648
1853 1649
1854 1649
1855 1649
1856 1650
1857 1651
1858 1651
1859 1652
1860 1652
1861 1653
1862 1654
1863 1654
1864 1655
1865 1655
1866 1656
1867 1657
1868 1657
1869 1657
1870 1658
1871 1659
1872 1659
1873 1660
1874 1660
1875 1661
1876 1661
1877 1662
1878 1663
1879 1663
1880 1664
1881 1664
1882 1665
1883 1666
1884 1666
1885 1666
1886 1667
1887 1668
1888 1668
1889 1669
1890 1669
1891 1670
1892 1671
1893 1671
1894 1672
1895 1672
1896 1672
1897 1673
1898 1672
1899 1672
1900 1677
1901 1687
1902 1689
1903 1707
1904 1732
1905 1765
1906 1804
1907 1840
1908 1900
1909 1961
1910 2012
1911 2067
1912 2091
1913 2093
1914 2095
1915 2098
1916 2101
1917 2103
1918 2105
1919 2107
1920 2108
1921 2123
1922 2152
1923 2193
1924 2235
1925 2279
1926 2323
1927 2368
1928 2413
1929 2460
1930 2581
1931 2702
1932 2822
1933 2941
1934 3059
1935 3177
1936 3294
1937 3410
1938 3526
1939 3641
1940 3755
1941 3710
1942 3662
1943 3612
1944 3558
1945 3503
1946 3446
1947 3387
1948 3326
1949 3164
1950 2962
1951 2962
1952 2970
1953 2989
1954 3010
1955 3048
1956 3092
1957 3135
1958 3187
1959 3231
1960 3271
1961 3323
1962 3355
1963 3379
1964 3401
1965 3427
1966 3457
1967 3485
1968 3517
1969 3551
1970 3589
1971 3610
1972 3611
1973 3585
1974 3543
1975 3483
1976 3431
1977 3365
1978 3307
1979 3257
1980 3202
1981 3133
1982 3048
1983 2957
1984 2874
1985 2811
1986 2750
1987 2724
1988 2719
1989 2719
1990 2731
1991 2787
1992 2870
1993 2992
1994 3152
1995 3352
1996 3574
1997 3801
1998 4020
1999 4210
2000 4366
2001 4489
2002 4539
2003 4558
2004 4535
2005 4484
2006 4241
2007 4095
2008 4033
2009 3723
2010 3182
2011 2870
2012 2652
2013 2474
2014 2291
2015 2221