| Year | Count |
|---|---|
| 1988 | 28 |
| 1989 | 76 |
| 1990 | 70 |
| 1991 | 97 |
| 1992 | 110 |
| 1993 | 45 |
| 1994 | 71 |
| 1995 | 40 |
| 1996 | 39 |
| 1997 | 33 |
| 1998 | 25 |
| 1999 | 22 |
| 2000 | 30 |
| 2001 | 47 |
| 2002 | 33 |
| 2003 | 25 |
| 2004 | 19 |
| 2005 | 62 |
| 2006 | 21 |
| 2007 | 33 |
| 2008 | 46 |
| 2009 | 27 |
| 2010 | 45 |
| 2011 | 41 |
| 2012 | 78 |
| 2013 | 102 |
| 2014 | 73 |
| 2015 | 129 |
| 2016 | 62 |
| 2017 | 84 |
| 2018 | 55 |
| 2019 | 67 |
| 2020 | 86 |
| 2021 | 182 |
| 2022 | 80 |
| 2023 | 119 |
| 2024 | 74 |