| Year | Count |
|---|---|
| 1994 | 8 |
| 1995 | 44 |
| 1996 | 10 |
| 1997 | 20 |
| 1998 | 31 |
| 1999 | 15 |
| 2000 | 12 |
| 2003 | 48 |
| 2004 | 51 |
| 2005 | 46 |
| 2006 | 52 |
| 2007 | 51 |
| 2008 | 87 |
| 2009 | 48 |
| 2010 | 105 |
| 2011 | 144 |
| 2012 | 237 |
| 2013 | 241 |
| 2014 | 256 |
| 2015 | 276 |
| 2016 | 420 |
| 2017 | 430 |
| 2018 | 373 |
| 2019 | 445 |
| 2020 | 415 |
| 2021 | 435 |
| 2022 | 389 |
| 2023 | 350 |
| 2024 | 428 |