| Year | Count |
|---|---|
| 1910 | 7 |
| 1912 | 5 |
| 1913 | 6 |
| 1914 | 8 |
| 1915 | 17 |
| 1916 | 10 |
| 1917 | 15 |
| 1918 | 7 |
| 1919 | 9 |
| 1920 | 11 |
| 1921 | 9 |
| 1922 | 32 |
| 1923 | 18 |
| 1924 | 22 |
| 1925 | 20 |
| 1926 | 20 |
| 1927 | 14 |
| 1929 | 22 |
| 1931 | 7 |
| 1933 | 5 |
| 1935 | 6 |
| 1937 | 8 |
| 1941 | 5 |
| 1942 | 6 |
| 1944 | 6 |
| 1948 | 6 |
| 1949 | 6 |
| 1952 | 9 |
| 1953 | 6 |
| 1961 | 18 |
| 1962 | 5 |
| 1967 | 5 |
| 1972 | 7 |