| Year | Count |
|---|---|
| 1953 | 7 |
| 1962 | 5 |
| 1963 | 5 |
| 1973 | 5 |
| 1979 | 10 |
| 1980 | 5 |
| 1991 | 5 |
| 1994 | 9 |
| 1995 | 6 |
| 1996 | 6 |
| 1999 | 8 |
| 2000 | 6 |
| 2001 | 7 |
| 2002 | 8 |
| 2003 | 18 |
| 2004 | 13 |
| 2005 | 12 |
| 2006 | 15 |
| 2007 | 16 |
| 2008 | 8 |
| 2009 | 5 |
| 2010 | 6 |
| 2011 | 10 |
| 2012 | 9 |
| 2013 | 7 |
| 2014 | 6 |
| 2015 | 27 |
| 2016 | 18 |
| 2017 | 27 |
| 2018 | 14 |
| 2019 | 10 |
| 2020 | 10 |
| 2021 | 20 |
| 2022 | 12 |
| 2024 | 10 |