| Year | Count |
|---|---|
| 1996 | 6 |
| 1997 | 14 |
| 1998 | 19 |
| 1999 | 12 |
| 2000 | 58 |
| 2001 | 32 |
| 2002 | 76 |
| 2003 | 45 |
| 2004 | 135 |
| 2005 | 208 |
| 2006 | 185 |
| 2007 | 288 |
| 2008 | 270 |
| 2009 | 182 |
| 2010 | 227 |
| 2011 | 406 |
| 2012 | 393 |
| 2013 | 329 |
| 2014 | 298 |
| 2015 | 371 |
| 2016 | 406 |
| 2017 | 381 |
| 2018 | 281 |
| 2019 | 344 |
| 2020 | 334 |
| 2021 | 431 |
| 2022 | 455 |
| 2023 | 508 |
| 2024 | 468 |