| Year | Count |
|---|---|
| 1993 | 28 |
| 1994 | 30 |
| 1995 | 87 |
| 1996 | 73 |
| 1997 | 98 |
| 1998 | 100 |
| 1999 | 92 |
| 2000 | 151 |
| 2001 | 63 |
| 2002 | 76 |
| 2003 | 63 |
| 2004 | 69 |
| 2005 | 128 |
| 2006 | 74 |
| 2007 | 158 |
| 2008 | 189 |
| 2009 | 151 |
| 2010 | 117 |
| 2011 | 115 |
| 2012 | 82 |
| 2013 | 30 |
| 2014 | 59 |
| 2015 | 86 |
| 2016 | 60 |
| 2017 | 80 |
| 2018 | 68 |
| 2019 | 5 |
| 2020 | 29 |
| 2021 | 8 |
| 2022 | 7 |
| 2023 | 9 |
| 2024 | 33 |