| Year | Count |
|---|---|
| 1993 | 5 |
| 1995 | 5 |
| 1996 | 19 |
| 1997 | 47 |
| 1998 | 114 |
| 1999 | 142 |
| 2000 | 210 |
| 2001 | 279 |
| 2002 | 282 |
| 2003 | 354 |
| 2004 | 375 |
| 2005 | 492 |
| 2006 | 594 |
| 2007 | 593 |
| 2008 | 606 |
| 2009 | 706 |
| 2010 | 674 |
| 2011 | 702 |
| 2012 | 805 |
| 2013 | 708 |
| 2014 | 657 |
| 2015 | 581 |
| 2016 | 633 |
| 2017 | 508 |
| 2018 | 534 |
| 2019 | 514 |
| 2020 | 482 |
| 2021 | 643 |
| 2022 | 509 |
| 2023 | 413 |
| 2024 | 417 |