| Year | Count |
|---|---|
| 1952 | 104 |
| 1953 | 62 |
| 1954 | 64 |
| 1955 | 46 |
| 1956 | 53 |
| 1957 | 47 |
| 1958 | 38 |
| 1959 | 20 |
| 1960 | 61 |
| 1961 | 47 |
| 1962 | 25 |
| 1963 | 30 |
| 1964 | 70 |
| 1965 | 33 |
| 1966 | 18 |
| 1967 | 25 |
| 1968 | 10 |
| 1970 | 5 |
| 1973 | 10 |
| 1998 | 5 |
| 2004 | 12 |
| 2010 | 5 |
| 2011 | 10 |
| 2012 | 28 |
| 2014 | 5 |
| 2015 | 5 |
| 2016 | 10 |
| 2017 | 27 |
| 2018 | 5 |
| 2020 | 6 |
| 2023 | 5 |