| Year | Count |
|---|---|
| 1996 | 144 |
| 1997 | 71 |
| 1998 | 147 |
| 1999 | 300 |
| 2000 | 246 |
| 2001 | 381 |
| 2002 | 381 |
| 2003 | 525 |
| 2004 | 686 |
| 2005 | 670 |
| 2006 | 641 |
| 2007 | 636 |
| 2008 | 591 |
| 2009 | 489 |
| 2010 | 708 |
| 2011 | 408 |
| 2012 | 239 |
| 2013 | 170 |
| 2014 | 141 |
| 2015 | 110 |
| 2016 | 81 |
| 2017 | 71 |
| 2018 | 16 |
| 2019 | 14 |
| 2020 | 33 |
| 2021 | 12 |
| 2022 | 10 |
| 2023 | 10 |
| 2024 | 10 |