| Year | Count |
|---|---|
| 1985 | 5 |
| 1991 | 6 |
| 1993 | 5 |
| 1994 | 5 |
| 1995 | 10 |
| 1996 | 11 |
| 1997 | 22 |
| 1998 | 26 |
| 1999 | 43 |
| 2000 | 51 |
| 2001 | 29 |
| 2002 | 41 |
| 2003 | 45 |
| 2004 | 40 |
| 2005 | 68 |
| 2006 | 84 |
| 2007 | 118 |
| 2008 | 77 |
| 2009 | 84 |
| 2010 | 119 |
| 2011 | 77 |
| 2012 | 113 |
| 2013 | 130 |
| 2014 | 152 |
| 2015 | 158 |
| 2016 | 187 |
| 2017 | 282 |
| 2018 | 230 |
| 2019 | 257 |
| 2020 | 235 |
| 2021 | 365 |
| 2022 | 267 |
| 2023 | 368 |
| 2024 | 341 |