| Year | Count |
|---|---|
| 1992 | 10 |
| 1995 | 5 |
| 1996 | 5 |
| 1997 | 8 |
| 1999 | 31 |
| 2000 | 45 |
| 2001 | 108 |
| 2002 | 85 |
| 2003 | 123 |
| 2004 | 184 |
| 2005 | 198 |
| 2006 | 141 |
| 2007 | 138 |
| 2008 | 167 |
| 2009 | 71 |
| 2010 | 75 |
| 2011 | 58 |
| 2012 | 10 |
| 2013 | 59 |
| 2014 | 20 |
| 2015 | 31 |
| 2016 | 62 |
| 2017 | 14 |
| 2018 | 16 |
| 2019 | 29 |
| 2020 | 17 |
| 2021 | 37 |
| 2022 | 24 |
| 2023 | 57 |
| 2024 | 62 |