| Year | Count |
|---|---|
| 1996 | 7 |
| 1997 | 21 |
| 1998 | 36 |
| 1999 | 63 |
| 2000 | 35 |
| 2001 | 69 |
| 2002 | 73 |
| 2003 | 106 |
| 2004 | 263 |
| 2005 | 242 |
| 2006 | 209 |
| 2007 | 234 |
| 2008 | 96 |
| 2009 | 102 |
| 2010 | 86 |
| 2011 | 142 |
| 2012 | 265 |
| 2013 | 172 |
| 2014 | 143 |
| 2015 | 369 |
| 2016 | 467 |
| 2017 | 494 |
| 2018 | 330 |
| 2019 | 337 |
| 2020 | 284 |
| 2021 | 254 |
| 2022 | 286 |
| 2023 | 340 |
| 2024 | 343 |