| Year | Total | vs prev |
|---|---|---|
| 2026 YTD | 0 | −100.0% |
| 2025 | 28 | −94.5% |
| 2024 | 511 | −40.8% |
| 2023 | 863 | +61.3% |
| 2022 | 535 | −31.5% |
| 2021 | 781 | −0.3% |
| 2020 | 783 | −39.0% |
| 2019 | 1,284 | −21.0% |
| 2018 | 1,625 | −25.4% |
| 2017 | 2,177 | −26.5% |
| 2016 | 2,963 | +19.6% |
| 2015 | 2,478 | −6.0% |
| 2014 | 2,635 | +5.9% |
| 2013 | 2,488 | −9.4% |
| 2012 | 2,746 | −11.6% |
| 2011 | 3,106 | −9.5% |
| 2010 | 3,433 | −8.3% |
| 2009 | 3,743 | +1.8% |
| 2008 | 3,678 | +64.0% |
| 2007 | 2,242 | −16.6% |
| 2006 | 2,689 | +12.7% |
| 2005 | 2,387 | +130.9% |
| 2004 | 1,034 | −11.0% |
| 2003 | 1,162 | +4.3% |
| 2002 | 1,114 | −36.4% |
| 2001 | 1,751 | +20.2% |
| 2000 | 1,457 | −7.0% |
| 1999 | 1,566 | +7.5% |
| 1998 | 1,457 | −21.2% |
| 1997 | 1,848 | −6.6% |
| 1996 | 1,979 | +241.2% |
| 1995 | 580 | — |