| Year | Count |
|---|---|
| 1992 | 7 |
| 1994 | 6 |
| 1997 | 6 |
| 1998 | 10 |
| 1999 | 12 |
| 2000 | 13 |
| 2001 | 22 |
| 2002 | 6 |
| 2003 | 29 |
| 2004 | 5 |
| 2005 | 29 |
| 2006 | 31 |
| 2007 | 57 |
| 2008 | 63 |
| 2009 | 93 |
| 2010 | 76 |
| 2011 | 111 |
| 2012 | 131 |
| 2013 | 162 |
| 2014 | 154 |
| 2015 | 190 |
| 2016 | 243 |
| 2017 | 255 |
| 2018 | 194 |
| 2019 | 182 |
| 2020 | 172 |
| 2021 | 146 |
| 2022 | 229 |
| 2023 | 234 |
| 2024 | 371 |