| Year | Count |
|---|---|
| 1997 | 10 |
| 1998 | 18 |
| 2000 | 12 |
| 2000 | 6 |
| 2001 | 12 |
| 2002 | 29 |
| 2003 | 12 |
| 2003 | 17 |
| 2004 | 49 |
| 2005 | 31 |
| 2005 | 28 |
| 2006 | 17 |
| 2006 | 36 |
| 2007 | 59 |
| 2007 | 35 |
| 2008 | 24 |
| 2008 | 58 |
| 2009 | 5 |
| 2009 | 42 |
| 2010 | 29 |
| 2010 | 41 |
| 2011 | 23 |
| 2011 | 36 |
| 2012 | 19 |
| 2012 | 25 |
| 2013 | 36 |
| 2014 | 26 |
| 2014 | 34 |
| 2015 | 26 |
| 2015 | 37 |
| 2016 | 68 |
| 2016 | 40 |
| 2017 | 60 |
| 2017 | 104 |
| 2018 | 66 |
| 2018 | 133 |
| 2019 | 124 |
| 2019 | 162 |
| 2020 | 163 |
| 2020 | 286 |
| 2021 | 332 |
| 2021 | 467 |
| 2022 | 421 |
| 2022 | 428 |
| 2023 | 369 |
| 2023 | 458 |
| 2024 | 337 |
| 2024 | 497 |