| Year | Count |
|---|---|
| 1997 | 27 |
| 1998 | 130 |
| 1999 | 202 |
| 2000 | 126 |
| 2001 | 333 |
| 2002 | 417 |
| 2003 | 804 |
| 2004 | 1,120 |
| 2005 | 1,063 |
| 2006 | 757 |
| 2007 | 735 |
| 2008 | 810 |
| 2009 | 691 |
| 2010 | 632 |
| 2011 | 632 |
| 2012 | 626 |
| 2013 | 596 |
| 2014 | 554 |
| 2015 | 527 |
| 2016 | 607 |
| 2017 | 625 |
| 2018 | 625 |
| 2019 | 457 |
| 2020 | 358 |
| 2021 | 381 |
| 2022 | 279 |
| 2023 | 237 |
| 2024 | 228 |