| Year | Count |
|---|---|
| 1933 | 10 |
| 1940 | 5 |
| 1941 | 17 |
| 1942 | 7 |
| 1943 | 15 |
| 1946 | 10 |
| 1947 | 24 |
| 1948 | 10 |
| 1949 | 39 |
| 1950 | 21 |
| 1951 | 84 |
| 1952 | 35 |
| 1953 | 33 |
| 1954 | 19 |
| 1955 | 10 |
| 1956 | 16 |
| 1957 | 10 |
| 1961 | 6 |
| 1963 | 6 |
| 1968 | 5 |
| 1969 | 5 |
| 1970 | 7 |
| 1971 | 5 |
| 1972 | 5 |
| 1976 | 10 |
| 1979 | 10 |
| 1982 | 5 |
| 1989 | 7 |
| 1990 | 5 |
| 1992 | 5 |
| 1993 | 5 |
| 1998 | 5 |
| 2000 | 5 |