| 1855 | 20 |
| 1856 | 22 |
| 1857 | 26 |
| 1858 | 46 |
| 1859 | 38 |
| 1860 | 23 |
| 1861 | 56 |
| 1862 | 59 |
| 1863 | 66 |
| 1864 | 70 |
| 1865 | 81 |
| 1866 | 94 |
| 1867 | 104 |
| 1868 | 117 |
| 1869 | 116 |
| 1870 | 104 |
| 1871 | 124 |
| 1872 | 158 |
| 1873 | 126 |
| 1874 | 169 |
| 1875 | 159 |
| 1876 | 159 |
| 1877 | 171 |
| 1878 | 231 |
| 1879 | 225 |
| 1880 | 257 |
| 1881 | 303 |
| 1882 | 369 |
| 1883 | 473 |
| 1884 | 428 |
| 1885 | 457 |
| 1886 | 444 |
| 1887 | 487 |
| 1888 | 597 |
| 1889 | 725 |
| 1890 | 887 |
| 1891 | 903 |
| 1892 | 874 |
| 1893 | 822 |
| 1894 | 723 |
| 1895 | 746 |
| 1896 | 643 |
| 1897 | 568 |
| 1898 | 780 |
| 1899 | 789 |
| 1900 | 875 |
| 1901 | 993 |
| 1902 | 1157 |
| 1903 | 1373 |
| 1904 | 1494 |
| 1905 | 1826 |
| 1906 | 2010 |
| 1907 | 2350 |
| 1908 | 2304 |
|