| Year | Count |
|---|---|
| 1996 | 6 |
| 1997 | 6 |
| 1998 | 6 |
| 1999 | 15 |
| 2000 | 13 |
| 2001 | 57 |
| 2002 | 78 |
| 2003 | 141 |
| 2004 | 345 |
| 2005 | 481 |
| 2006 | 1,174 |
| 2007 | 1,859 |
| 2008 | 1,814 |
| 2009 | 1,748 |
| 2010 | 1,871 |
| 2011 | 1,902 |
| 2012 | 1,583 |
| 2013 | 1,199 |
| 2014 | 972 |
| 2015 | 953 |
| 2016 | 805 |
| 2017 | 714 |
| 2018 | 497 |
| 2019 | 387 |
| 2020 | 323 |
| 2021 | 344 |
| 2022 | 223 |
| 2023 | 151 |
| 2024 | 108 |