| Year | Count |
|---|---|
| 1912 | 6 |
| 1914 | 18 |
| 1915 | 25 |
| 1916 | 26 |
| 1917 | 32 |
| 1918 | 30 |
| 1919 | 30 |
| 1920 | 7 |
| 1921 | 27 |
| 1922 | 31 |
| 1923 | 17 |
| 1924 | 20 |
| 1925 | 12 |
| 1926 | 32 |
| 1927 | 41 |
| 1928 | 27 |
| 1929 | 50 |
| 1930 | 46 |
| 1931 | 6 |
| 1932 | 7 |
| 1933 | 24 |
| 1934 | 10 |
| 1936 | 5 |
| 1937 | 5 |
| 1938 | 5 |
| 1941 | 5 |
| 1943 | 6 |
| 1944 | 7 |
| 1945 | 5 |
| 1952 | 5 |
| 1953 | 10 |
| 1954 | 12 |
| 1957 | 7 |
| 1959 | 5 |
| 1967 | 5 |
| 1970 | 6 |
| 1971 | 6 |