| Year | Count |
|---|---|
| 1947 | 5 |
| 1948 | 5 |
| 1950 | 5 |
| 1952 | 7 |
| 1953 | 10 |
| 1954 | 7 |
| 1956 | 7 |
| 1958 | 14 |
| 1960 | 14 |
| 1961 | 20 |
| 1962 | 6 |
| 1963 | 6 |
| 1964 | 7 |
| 1965 | 5 |
| 1966 | 7 |
| 1970 | 5 |
| 1971 | 12 |
| 1981 | 5 |
| 1992 | 5 |
| 1999 | 6 |
| 2000 | 6 |
| 2002 | 10 |
| 2003 | 6 |
| 2004 | 9 |
| 2005 | 5 |
| 2006 | 5 |
| 2007 | 7 |
| 2008 | 5 |
| 2010 | 5 |
| 2011 | 5 |
| 2012 | 8 |
| 2013 | 6 |
| 2014 | 6 |
| 2016 | 42 |
| 2017 | 36 |
| 2018 | 27 |
| 2019 | 38 |
| 2020 | 24 |
| 2021 | 22 |
| 2022 | 34 |
| 2023 | 32 |
| 2024 | 52 |