| Year | Count |
|---|---|
| 1976 | 5 |
| 1994 | 5 |
| 1995 | 7 |
| 1997 | 7 |
| 1998 | 6 |
| 1999 | 24 |
| 2000 | 26 |
| 2001 | 36 |
| 2002 | 36 |
| 2003 | 6 |
| 2003 | 30 |
| 2004 | 40 |
| 2005 | 37 |
| 2006 | 43 |
| 2007 | 53 |
| 2008 | 38 |
| 2009 | 43 |
| 2010 | 47 |
| 2011 | 48 |
| 2012 | 28 |
| 2013 | 40 |
| 2014 | 39 |
| 2015 | 30 |
| 2016 | 60 |
| 2017 | 94 |
| 2018 | 64 |
| 2019 | 70 |
| 2020 | 36 |
| 2021 | 29 |
| 2022 | 30 |
| 2023 | 28 |
| 2024 | 32 |