| Year | Count |
|---|---|
| 1994 | 5 |
| 1995 | 33 |
| 1996 | 43 |
| 1997 | 168 |
| 1998 | 248 |
| 1999 | 244 |
| 2000 | 340 |
| 2001 | 493 |
| 2002 | 374 |
| 2003 | 452 |
| 2004 | 585 |
| 2005 | 671 |
| 2006 | 670 |
| 2007 | 728 |
| 2008 | 731 |
| 2009 | 672 |
| 2010 | 602 |
| 2011 | 467 |
| 2012 | 455 |
| 2013 | 386 |
| 2014 | 312 |
| 2015 | 363 |
| 2016 | 265 |
| 2017 | 232 |
| 2018 | 209 |
| 2019 | 197 |
| 2020 | 159 |
| 2021 | 71 |
| 2022 | 38 |
| 2023 | 47 |
| 2024 | 18 |