| Year | Count |
|---|---|
| 1916 | 22 |
| 1919 | 10 |
| 1920 | 12 |
| 1922 | 16 |
| 1924 | 21 |
| 1925 | 21 |
| 1926 | 18 |
| 1927 | 18 |
| 1928 | 23 |
| 1930 | 5 |
| 1933 | 10 |
| 1935 | 12 |
| 1936 | 5 |
| 1937 | 5 |
| 1938 | 15 |
| 1939 | 5 |
| 1941 | 5 |
| 1944 | 10 |
| 1947 | 6 |
| 1948 | 15 |
| 1949 | 6 |
| 1954 | 12 |
| 1956 | 26 |
| 1957 | 22 |
| 1959 | 15 |
| 1960 | 14 |
| 1961 | 10 |
| 1962 | 15 |
| 1964 | 5 |
| 1966 | 12 |
| 1967 | 5 |
| 1968 | 10 |
| 1969 | 6 |
| 1970 | 10 |
| 1971 | 15 |
| 1972 | 5 |