| Year | Count |
|---|---|
| 1993 | 10 |
| 1995 | 7 |
| 1996 | 23 |
| 1997 | 51 |
| 1998 | 82 |
| 1999 | 42 |
| 2000 | 106 |
| 2001 | 145 |
| 2002 | 143 |
| 2003 | 173 |
| 2004 | 260 |
| 2005 | 288 |
| 2006 | 319 |
| 2007 | 357 |
| 2008 | 351 |
| 2009 | 319 |
| 2010 | 305 |
| 2011 | 309 |
| 2012 | 356 |
| 2013 | 295 |
| 2014 | 347 |
| 2015 | 364 |
| 2016 | 240 |
| 2017 | 194 |
| 2018 | 119 |
| 2019 | 101 |
| 2020 | 96 |
| 2021 | 89 |
| 2022 | 120 |
| 2023 | 78 |
| 2024 | 75 |