| Year | Count |
|---|---|
| 1910 | 6 |
| 1911 | 20 |
| 1912 | 25 |
| 1913 | 42 |
| 1914 | 79 |
| 1915 | 100 |
| 1916 | 112 |
| 1917 | 138 |
| 1918 | 151 |
| 1919 | 116 |
| 1920 | 109 |
| 1921 | 118 |
| 1922 | 86 |
| 1923 | 98 |
| 1924 | 50 |
| 1925 | 61 |
| 1926 | 47 |
| 1927 | 28 |
| 1928 | 44 |
| 1929 | 16 |
| 1930 | 12 |
| 1931 | 5 |
| 1932 | 12 |
| 1937 | 6 |
| 1939 | 5 |
| 1941 | 20 |
| 1942 | 21 |
| 1943 | 15 |
| 1944 | 5 |
| 1945 | 5 |
| 1951 | 6 |