| Year | Count |
|---|---|
| 1953 | 5 |
| 1954 | 15 |
| 1956 | 31 |
| 1957 | 5 |
| 1958 | 15 |
| 1959 | 20 |
| 1960 | 10 |
| 1962 | 18 |
| 1968 | 12 |
| 1969 | 11 |
| 1970 | 41 |
| 1971 | 15 |
| 1972 | 24 |
| 1973 | 25 |
| 1974 | 12 |
| 1976 | 5 |
| 1977 | 10 |
| 1978 | 19 |
| 1979 | 5 |
| 1979 | 31 |
| 1980 | 6 |
| 1982 | 6 |
| 1983 | 7 |
| 1984 | 5 |
| 1988 | 5 |
| 1989 | 6 |
| 1997 | 10 |
| 1999 | 5 |
| 2000 | 7 |
| 2001 | 10 |
| 2006 | 5 |
| 2009 | 10 |
| 2010 | 6 |
| 2011 | 12 |
| 2019 | 5 |
| 2020 | 6 |
| 2023 | 6 |
| 2024 | 10 |