| Year | Count |
|---|---|
| 1998 | 6 |
| 1999 | 8 |
| 2001 | 22 |
| 2002 | 7 |
| 2003 | 63 |
| 2004 | 78 |
| 2005 | 92 |
| 2006 | 109 |
| 2007 | 152 |
| 2008 | 316 |
| 2009 | 345 |
| 2010 | 368 |
| 2011 | 470 |
| 2012 | 545 |
| 2013 | 567 |
| 2014 | 682 |
| 2015 | 5 |
| 2015 | 837 |
| 2016 | 6 |
| 2016 | 937 |
| 2017 | 1,012 |
| 2018 | 5 |
| 2018 | 885 |
| 2019 | 994 |
| 2020 | 5 |
| 2020 | 785 |
| 2021 | 1,096 |
| 2022 | 1,060 |
| 2023 | 746 |
| 2024 | 723 |