| Year | Total | vs prev |
|---|---|---|
| 2026 YTD | 2 | −50.0% |
| 2025 | 13 | +18.2% |
| 2024 | 11 | −45.0% |
| 2023 | 20 | −4.8% |
| 2022 | 21 | −38.2% |
| 2021 | 34 | +88.9% |
| 2020 | 18 | −50.0% |
| 2019 | 36 | −60.4% |
| 2018 | 91 | +2933.3% |
| 2017 | 3 | −85.0% |
| 2016 | 20 | −25.9% |
| 2015 | 27 | −10.0% |
| 2014 | 30 | −58.9% |
| 2013 | 73 | +563.6% |
| 2012 | 11 | −68.6% |
| 2011 | 35 | −41.7% |
| 2010 | 60 | +17.6% |
| 2009 | 51 | −70.2% |
| 2008 | 171 | −33.5% |
| 2007 | 257 | +367.3% |
| 2006 | 55 | −46.6% |
| 2005 | 103 | −37.6% |
| 2004 | 165 | −10.8% |
| 2003 | 185 | +32.1% |
| 2002 | 140 | −33.3% |
| 2001 | 210 | — |