| Year | Count |
|---|---|
| 1916 | 5 |
| 1918 | 5 |
| 1927 | 5 |
| 1930 | 10 |
| 1940 | 6 |
| 1941 | 10 |
| 1942 | 10 |
| 1943 | 7 |
| 1944 | 6 |
| 1946 | 5 |
| 1947 | 15 |
| 1948 | 9 |
| 1949 | 8 |
| 1955 | 21 |
| 1956 | 12 |
| 1957 | 10 |
| 1958 | 12 |
| 1959 | 14 |
| 1960 | 12 |
| 1962 | 20 |
| 1963 | 22 |
| 1964 | 18 |
| 1965 | 18 |
| 1966 | 10 |
| 1967 | 10 |
| 1968 | 10 |
| 1970 | 6 |
| 1971 | 6 |
| 1972 | 5 |
| 1973 | 7 |
| 1975 | 5 |
| 1976 | 6 |
| 1979 | 7 |
| 1980 | 6 |
| 1984 | 6 |
| 1989 | 5 |