| Year | Total | vs prev |
|---|---|---|
| 2023 | 0 | −100.0% |
| 2022 | 78 | −96.8% |
| 2021 | 2,446 | −37.6% |
| 2020 | 3,919 | — |
| 2019 | 3,919 | −10.2% |
| 2018 | 4,362 | −22.7% |
| 2017 | 5,645 | +3.3% |
| 2016 | 5,467 | +18.9% |
| 2015 | 4,597 | +5.8% |
| 2014 | 4,344 | +9.3% |
| 2013 | 3,974 | −32.1% |
| 2012 | 5,854 | −11.4% |
| 2011 | 6,610 | +10.4% |
| 2010 | 5,990 | +59.9% |
| 2009 | 3,745 | +87.2% |
| 2008 | 2,000 | +11011.1% |
| 2007 | 18 | — |