| Year | Count |
|---|---|
| 1999 | 5 |
| 2000 | 80 |
| 2001 | 150 |
| 2002 | 124 |
| 2003 | 302 |
| 2004 | 399 |
| 2005 | 548 |
| 2006 | 571 |
| 2007 | 785 |
| 2008 | 818 |
| 2009 | 845 |
| 2010 | 921 |
| 2011 | 1,130 |
| 2012 | 1,012 |
| 2013 | 1,165 |
| 2014 | 1,210 |
| 2015 | 1,311 |
| 2016 | 1,561 |
| 2017 | 1,522 |
| 2018 | 1,390 |
| 2019 | 1,285 |
| 2020 | 1,100 |
| 2021 | 1,018 |
| 2022 | 951 |
| 2023 | 777 |
| 2024 | 666 |