| Year | Count |
|---|---|
| 1992 | 5 |
| 1996 | 6 |
| 1998 | 8 |
| 1999 | 5 |
| 2000 | 20 |
| 2001 | 22 |
| 2002 | 10 |
| 2003 | 33 |
| 2004 | 25 |
| 2005 | 34 |
| 2006 | 63 |
| 2007 | 119 |
| 2008 | 246 |
| 2009 | 215 |
| 2010 | 275 |
| 2011 | 279 |
| 2012 | 392 |
| 2013 | 397 |
| 2014 | 498 |
| 2015 | 746 |
| 2016 | 805 |
| 2017 | 947 |
| 2018 | 885 |
| 2019 | 963 |
| 2020 | 771 |
| 2021 | 922 |
| 2022 | 825 |
| 2023 | 866 |
| 2024 | 726 |