| Year | Count |
|---|---|
| 1999 | 6 |
| 2000 | 8 |
| 2001 | 16 |
| 2002 | 29 |
| 2003 | 71 |
| 2004 | 113 |
| 2005 | 114 |
| 2006 | 14 |
| 2006 | 159 |
| 2007 | 12 |
| 2007 | 193 |
| 2008 | 22 |
| 2008 | 332 |
| 2009 | 297 |
| 2010 | 310 |
| 2011 | 12 |
| 2011 | 288 |
| 2012 | 5 |
| 2012 | 393 |
| 2013 | 7 |
| 2013 | 407 |
| 2014 | 498 |
| 2015 | 14 |
| 2015 | 586 |
| 2016 | 14 |
| 2016 | 718 |
| 2017 | 5 |
| 2017 | 579 |
| 2018 | 10 |
| 2018 | 618 |
| 2019 | 668 |
| 2020 | 557 |
| 2021 | 704 |
| 2022 | 805 |
| 2023 | 670 |
| 2024 | 729 |