| Year | Count |
|---|---|
| 1977 | 10 |
| 1997 | 8 |
| 2003 | 5 |
| 2004 | 6 |
| 2008 | 10 |
| 2009 | 14 |
| 2010 | 9 |
| 2011 | 11 |
| 2012 | 26 |
| 2012 | 7 |
| 2013 | 28 |
| 2013 | 5 |
| 2014 | 51 |
| 2014 | 8 |
| 2015 | 66 |
| 2015 | 14 |
| 2016 | 288 |
| 2016 | 16 |
| 2017 | 363 |
| 2017 | 26 |
| 2018 | 510 |
| 2018 | 34 |
| 2019 | 386 |
| 2019 | 44 |
| 2020 | 470 |
| 2020 | 23 |
| 2021 | 450 |
| 2021 | 17 |
| 2022 | 492 |
| 2022 | 20 |
| 2023 | 496 |
| 2023 | 18 |
| 2024 | 444 |
| 2024 | 15 |