| Year | Total | vs prev |
|---|---|---|
| 2025 | 0 | −100.0% |
| 2024 | 12 | +100.0% |
| 2023 | 6 | −50.0% |
| 2022 | 12 | −70.0% |
| 2021 | 40 | +14.3% |
| 2020 | 35 | −30.0% |
| 2019 | 50 | −77.5% |
| 2018 | 222 | −10.8% |
| 2017 | 249 | −42.5% |
| 2016 | 433 | −11.1% |
| 2015 | 487 | −42.4% |
| 2014 | 846 | −3.2% |
| 2013 | 874 | +34.9% |
| 2012 | 648 | +17.8% |
| 2011 | 550 | +13.6% |
| 2010 | 484 | −5.3% |
| 2009 | 511 | +45.2% |
| 2008 | 352 | — |