| Year | Count |
|---|---|
| 1997 | 7 |
| 1998 | 5 |
| 1999 | 11 |
| 2000 | 21 |
| 2001 | 16 |
| 2002 | 13 |
| 2003 | 11 |
| 2004 | 38 |
| 2005 | 41 |
| 2006 | 6 |
| 2006 | 50 |
| 2007 | 99 |
| 2008 | 12 |
| 2008 | 123 |
| 2009 | 6 |
| 2009 | 63 |
| 2010 | 15 |
| 2010 | 125 |
| 2011 | 9 |
| 2011 | 159 |
| 2012 | 16 |
| 2012 | 128 |
| 2013 | 6 |
| 2013 | 150 |
| 2014 | 6 |
| 2014 | 175 |
| 2015 | 179 |
| 2016 | 5 |
| 2016 | 284 |
| 2017 | 12 |
| 2017 | 365 |
| 2018 | 7 |
| 2018 | 375 |
| 2019 | 736 |
| 2020 | 777 |
| 2021 | 1,049 |
| 2022 | 6 |
| 2022 | 1,099 |
| 2023 | 1,245 |
| 2024 | 10 |
| 2024 | 1,360 |