| Year | Count |
|---|---|
| 1986 | 12 |
| 1987 | 16 |
| 1988 | 16 |
| 1990 | 16 |
| 1991 | 18 |
| 1992 | 24 |
| 1993 | 32 |
| 1994 | 30 |
| 1995 | 18 |
| 1996 | 26 |
| 1997 | 14 |
| 1998 | 22 |
| 1999 | 10 |
| 1999 | 34 |
| 2000 | 36 |
| 2001 | 10 |
| 2001 | 38 |
| 2002 | 28 |
| 2003 | 40 |
| 2004 | 32 |
| 2005 | 32 |
| 2006 | 30 |
| 2007 | 10 |
| 2007 | 50 |
| 2008 | 36 |
| 2009 | 40 |
| 2010 | 50 |
| 2011 | 32 |
| 2012 | 26 |
| 2013 | 40 |
| 2014 | 22 |
| 2015 | 38 |
| 2016 | 37 |
| 2017 | 30 |
| 2018 | 30 |
| 2019 | 36 |
| 2020 | 29 |
| 2021 | 42 |
| 2022 | 31 |
| 2023 | 24 |
| 2024 | 24 |