| Year | Count |
|---|---|
| 1984 | 6 |
| 1988 | 5 |
| 1993 | 5 |
| 1994 | 12 |
| 1995 | 16 |
| 1996 | 46 |
| 1997 | 52 |
| 1998 | 46 |
| 1999 | 34 |
| 2000 | 47 |
| 2001 | 107 |
| 2002 | 85 |
| 2003 | 71 |
| 2004 | 52 |
| 2005 | 77 |
| 2006 | 68 |
| 2007 | 43 |
| 2008 | 72 |
| 2009 | 38 |
| 2010 | 44 |
| 2011 | 61 |
| 2012 | 35 |
| 2013 | 35 |
| 2014 | 36 |
| 2015 | 36 |
| 2016 | 63 |
| 2017 | 28 |
| 2018 | 6 |
| 2019 | 28 |
| 2020 | 6 |
| 2021 | 21 |
| 2022 | 31 |
| 2023 | 14 |
| 2024 | 5 |