| Year | Count |
|---|---|
| 1990 | 6 |
| 1992 | 5 |
| 1995 | 8 |
| 1996 | 17 |
| 1997 | 18 |
| 1998 | 16 |
| 1999 | 15 |
| 2000 | 18 |
| 2001 | 22 |
| 2002 | 16 |
| 2003 | 22 |
| 2003 | 5 |
| 2004 | 21 |
| 2005 | 37 |
| 2006 | 36 |
| 2007 | 40 |
| 2007 | 6 |
| 2008 | 43 |
| 2009 | 51 |
| 2010 | 46 |
| 2011 | 45 |
| 2011 | 9 |
| 2012 | 42 |
| 2013 | 35 |
| 2013 | 6 |
| 2014 | 53 |
| 2014 | 7 |
| 2015 | 61 |
| 2016 | 177 |
| 2016 | 10 |
| 2017 | 201 |
| 2018 | 210 |
| 2018 | 14 |
| 2019 | 158 |
| 2019 | 9 |
| 2020 | 178 |
| 2020 | 7 |
| 2021 | 180 |
| 2021 | 6 |
| 2022 | 220 |
| 2022 | 12 |
| 2023 | 200 |
| 2023 | 16 |
| 2024 | 270 |
| 2024 | 13 |