| Year | Count |
|---|---|
| 1982 | 5 |
| 1992 | 6 |
| 1996 | 12 |
| 1997 | 21 |
| 1998 | 13 |
| 1999 | 8 |
| 2000 | 11 |
| 2001 | 13 |
| 2002 | 6 |
| 2003 | 7 |
| 2004 | 8 |
| 2005 | 14 |
| 2006 | 12 |
| 2007 | 23 |
| 2008 | 25 |
| 2009 | 25 |
| 2010 | 36 |
| 2011 | 45 |
| 2012 | 36 |
| 2013 | 47 |
| 2014 | 73 |
| 2015 | 57 |
| 2016 | 141 |
| 2017 | 117 |
| 2018 | 44 |
| 2019 | 58 |
| 2020 | 84 |
| 2021 | 102 |
| 2022 | 84 |
| 2023 | 70 |
| 2024 | 118 |