| Year | Count |
|---|---|
| 1997 | 12 |
| 1998 | 13 |
| 1999 | 12 |
| 2003 | 14 |
| 2003 | 6 |
| 2005 | 12 |
| 2005 | 14 |
| 2006 | 6 |
| 2006 | 25 |
| 2007 | 10 |
| 2007 | 11 |
| 2008 | 25 |
| 2009 | 35 |
| 2010 | 5 |
| 2010 | 29 |
| 2011 | 7 |
| 2011 | 43 |
| 2012 | 14 |
| 2012 | 41 |
| 2013 | 43 |
| 2014 | 24 |
| 2014 | 55 |
| 2015 | 29 |
| 2015 | 87 |
| 2016 | 21 |
| 2016 | 82 |
| 2017 | 10 |
| 2017 | 59 |
| 2018 | 23 |
| 2018 | 61 |
| 2019 | 30 |
| 2019 | 65 |
| 2020 | 7 |
| 2020 | 32 |
| 2021 | 17 |
| 2021 | 33 |
| 2022 | 11 |
| 2022 | 6 |
| 2023 | 7 |
| 2024 | 6 |