| Year | Count |
|---|---|
| 1994 | 5 |
| 1995 | 25 |
| 1996 | 28 |
| 1997 | 90 |
| 1998 | 272 |
| 1999 | 243 |
| 2000 | 241 |
| 2001 | 308 |
| 2002 | 314 |
| 2003 | 389 |
| 2004 | 365 |
| 2005 | 448 |
| 2006 | 538 |
| 2007 | 573 |
| 2008 | 620 |
| 2009 | 543 |
| 2010 | 460 |
| 2011 | 540 |
| 2012 | 517 |
| 2013 | 445 |
| 2014 | 419 |
| 2015 | 495 |
| 2016 | 522 |
| 2017 | 447 |
| 2018 | 343 |
| 2019 | 248 |
| 2020 | 182 |
| 2021 | 236 |
| 2022 | 167 |
| 2023 | 139 |
| 2024 | 112 |