| Year | Count |
|---|---|
| 1989 | 5 |
| 1993 | 5 |
| 1996 | 7 |
| 1997 | 6 |
| 1999 | 5 |
| 2000 | 20 |
| 2001 | 57 |
| 2002 | 68 |
| 2003 | 106 |
| 2004 | 175 |
| 2005 | 157 |
| 2006 | 206 |
| 2007 | 249 |
| 2008 | 291 |
| 2009 | 258 |
| 2010 | 271 |
| 2011 | 283 |
| 2012 | 366 |
| 2013 | 452 |
| 2014 | 505 |
| 2015 | 601 |
| 2016 | 783 |
| 2017 | 785 |
| 2018 | 1,310 |
| 2019 | 1,938 |
| 2020 | 2,214 |
| 2021 | 3,524 |
| 2022 | 3,625 |
| 2023 | 3,815 |
| 2024 | 3,785 |