| Year | Count |
|---|---|
| 1985 | 5 |
| 1988 | 5 |
| 1989 | 5 |
| 1990 | 27 |
| 1991 | 25 |
| 1992 | 50 |
| 1993 | 27 |
| 1994 | 57 |
| 1995 | 76 |
| 1996 | 59 |
| 1997 | 56 |
| 1998 | 78 |
| 1999 | 58 |
| 2000 | 89 |
| 2001 | 109 |
| 2002 | 57 |
| 2003 | 103 |
| 2004 | 61 |
| 2005 | 124 |
| 2006 | 123 |
| 2007 | 102 |
| 2008 | 101 |
| 2009 | 84 |
| 2010 | 67 |
| 2011 | 67 |
| 2012 | 32 |
| 2013 | 57 |
| 2014 | 28 |
| 2015 | 32 |
| 2016 | 30 |
| 2017 | 6 |
| 2018 | 7 |
| 2019 | 24 |
| 2020 | 5 |
| 2021 | 19 |
| 2022 | 10 |
| 2023 | 8 |
| 2024 | 14 |