| Year | Count |
|---|---|
| 1998 | 22 |
| 1999 | 5 |
| 2000 | 34 |
| 2001 | 23 |
| 2002 | 79 |
| 2003 | 116 |
| 2004 | 178 |
| 2005 | 256 |
| 2006 | 222 |
| 2007 | 266 |
| 2008 | 398 |
| 2009 | 476 |
| 2010 | 537 |
| 2011 | 771 |
| 2012 | 809 |
| 2013 | 830 |
| 2014 | 829 |
| 2015 | 810 |
| 2016 | 1,047 |
| 2017 | 891 |
| 2018 | 924 |
| 2019 | 961 |
| 2020 | 837 |
| 2021 | 879 |
| 2022 | 907 |
| 2023 | 1,026 |
| 2024 | 810 |