| Year | Count |
|---|---|
| 1912 | 17 |
| 1913 | 16 |
| 1914 | 27 |
| 1915 | 51 |
| 1916 | 29 |
| 1917 | 33 |
| 1918 | 39 |
| 1919 | 47 |
| 1920 | 43 |
| 1921 | 43 |
| 1922 | 39 |
| 1923 | 37 |
| 1924 | 43 |
| 1925 | 43 |
| 1926 | 33 |
| 1927 | 38 |
| 1928 | 32 |
| 1929 | 23 |
| 1930 | 21 |
| 1931 | 17 |
| 1932 | 22 |
| 1933 | 14 |
| 1935 | 12 |
| 1936 | 5 |
| 1937 | 6 |
| 1942 | 5 |
| 1947 | 5 |
| 1956 | 5 |
| 1966 | 5 |
| 1970 | 6 |
| 1975 | 5 |