| Year | Count |
|---|---|
| 1985 | 6 |
| 1992 | 7 |
| 1994 | 27 |
| 1995 | 55 |
| 1996 | 49 |
| 1997 | 49 |
| 1998 | 33 |
| 1999 | 30 |
| 2000 | 51 |
| 2001 | 39 |
| 2002 | 54 |
| 2003 | 54 |
| 2004 | 105 |
| 2005 | 94 |
| 2006 | 101 |
| 2007 | 98 |
| 2008 | 116 |
| 2009 | 71 |
| 2010 | 134 |
| 2011 | 154 |
| 2012 | 119 |
| 2013 | 95 |
| 2014 | 79 |
| 2015 | 208 |
| 2016 | 194 |
| 2017 | 222 |
| 2018 | 136 |
| 2019 | 155 |
| 2020 | 103 |
| 2021 | 176 |
| 2022 | 176 |
| 2023 | 152 |
| 2024 | 149 |