| Year | Count |
|---|---|
| 1995 | 6 |
| 1996 | 10 |
| 1997 | 18 |
| 1998 | 33 |
| 1999 | 19 |
| 2000 | 40 |
| 2001 | 71 |
| 2002 | 85 |
| 2003 | 81 |
| 2004 | 160 |
| 2005 | 267 |
| 2006 | 299 |
| 2007 | 301 |
| 2008 | 313 |
| 2009 | 307 |
| 2010 | 349 |
| 2011 | 434 |
| 2012 | 395 |
| 2013 | 330 |
| 2014 | 372 |
| 2015 | 373 |
| 2016 | 433 |
| 2017 | 454 |
| 2018 | 271 |
| 2019 | 312 |
| 2020 | 268 |
| 2021 | 297 |
| 2022 | 269 |
| 2023 | 267 |
| 2024 | 219 |