| Year | Count |
|---|---|
| 1975 | 5 |
| 1988 | 10 |
| 1997 | 6 |
| 1998 | 6 |
| 1999 | 29 |
| 2000 | 23 |
| 2000 | 10 |
| 2001 | 53 |
| 2002 | 16 |
| 2002 | 24 |
| 2003 | 6 |
| 2003 | 25 |
| 2004 | 14 |
| 2004 | 6 |
| 2005 | 29 |
| 2005 | 38 |
| 2006 | 23 |
| 2006 | 31 |
| 2007 | 27 |
| 2007 | 8 |
| 2008 | 14 |
| 2008 | 27 |
| 2009 | 29 |
| 2010 | 5 |
| 2010 | 40 |
| 2011 | 5 |
| 2011 | 52 |
| 2012 | 37 |
| 2013 | 5 |
| 2013 | 90 |
| 2014 | 13 |
| 2014 | 113 |
| 2015 | 29 |
| 2015 | 120 |
| 2016 | 21 |
| 2016 | 129 |
| 2017 | 31 |
| 2017 | 136 |
| 2018 | 24 |
| 2018 | 189 |
| 2019 | 63 |
| 2019 | 194 |
| 2020 | 78 |
| 2020 | 204 |
| 2021 | 79 |
| 2021 | 291 |
| 2022 | 27 |
| 2022 | 236 |
| 2023 | 51 |
| 2023 | 287 |
| 2024 | 61 |
| 2024 | 373 |