| Year | Count |
|---|---|
| 1993 | 15 |
| 1994 | 9 |
| 1995 | 11 |
| 1996 | 6 |
| 1998 | 14 |
| 1999 | 6 |
| 2000 | 8 |
| 2001 | 10 |
| 2002 | 13 |
| 2003 | 11 |
| 2004 | 20 |
| 2005 | 15 |
| 2006 | 16 |
| 2007 | 24 |
| 2008 | 20 |
| 2009 | 33 |
| 2010 | 65 |
| 2011 | 59 |
| 2012 | 53 |
| 2013 | 50 |
| 2014 | 51 |
| 2015 | 58 |
| 2016 | 144 |
| 2017 | 168 |
| 2018 | 43 |
| 2019 | 90 |
| 2020 | 88 |
| 2021 | 62 |
| 2022 | 72 |
| 2023 | 60 |
| 2024 | 78 |