| Year | Count |
|---|---|
| 1996 | 5 |
| 1999 | 5 |
| 2000 | 43 |
| 2001 | 106 |
| 2002 | 115 |
| 2003 | 171 |
| 2004 | 225 |
| 2005 | 289 |
| 2006 | 292 |
| 2007 | 524 |
| 2008 | 2,085 |
| 2009 | 3,599 |
| 2010 | 5,812 |
| 2011 | 5,950 |
| 2012 | 5,087 |
| 2013 | 4,079 |
| 2014 | 3,744 |
| 2015 | 3,583 |
| 2016 | 3,121 |
| 2017 | 2,686 |
| 2018 | 2,493 |
| 2019 | 2,408 |
| 2020 | 1,898 |
| 2021 | 2,120 |
| 2022 | 2,040 |
| 2023 | 1,818 |
| 2024 | 1,691 |