| Year | Count |
|---|---|
| 1955 | 6 |
| 1959 | 6 |
| 1961 | 6 |
| 1966 | 5 |
| 1968 | 5 |
| 1969 | 7 |
| 1975 | 7 |
| 1976 | 10 |
| 1989 | 5 |
| 1992 | 5 |
| 1995 | 6 |
| 1996 | 5 |
| 2003 | 8 |
| 2005 | 7 |
| 2006 | 6 |
| 2007 | 7 |
| 2008 | 5 |
| 2009 | 9 |
| 2010 | 7 |
| 2012 | 12 |
| 2013 | 9 |
| 2014 | 11 |
| 2015 | 45 |
| 2016 | 27 |
| 2017 | 39 |
| 2018 | 13 |
| 2019 | 44 |
| 2020 | 26 |
| 2021 | 26 |
| 2021 | 5 |
| 2022 | 32 |
| 2023 | 36 |
| 2023 | 5 |
| 2024 | 46 |