| Year | Count |
|---|---|
| 1996 | 7 |
| 1997 | 10 |
| 1998 | 15 |
| 1999 | 12 |
| 2000 | 38 |
| 2001 | 61 |
| 2002 | 51 |
| 2003 | 183 |
| 2004 | 273 |
| 2005 | 283 |
| 2006 | 281 |
| 2007 | 372 |
| 2008 | 425 |
| 2009 | 404 |
| 2010 | 475 |
| 2011 | 607 |
| 2012 | 810 |
| 2013 | 857 |
| 2014 | 861 |
| 2015 | 976 |
| 2016 | 829 |
| 2017 | 944 |
| 2018 | 707 |
| 2019 | 675 |
| 2020 | 758 |
| 2021 | 697 |
| 2022 | 712 |
| 2022 | 5 |
| 2023 | 605 |
| 2024 | 443 |