| Year | Total | vs prev |
|---|---|---|
| 2026 YTD | 351 | +48.1% |
| 2025 | 821 | +24.0% |
| 2024 | 662 | +1.4% |
| 2023 | 653 | +31.9% |
| 2022 | 495 | −33.5% |
| 2021 | 744 | +62.8% |
| 2020 | 457 | +3.4% |
| 2019 | 442 | −47.1% |
| 2018 | 835 | −42.8% |
| 2017 | 1,459 | −7.5% |
| 2016 | 1,577 | +72.0% |
| 2015 | 917 | +677.1% |
| 2014 | 118 | −33.7% |
| 2013 | 178 | +11.9% |
| 2012 | 159 | −49.5% |
| 2011 | 315 | −28.4% |
| 2010 | 440 | −15.5% |
| 2009 | 521 | −18.5% |
| 2008 | 639 | −45.4% |
| 2007 | 1,170 | −20.3% |
| 2006 | 1,468 | +97.6% |
| 2005 | 743 | +53.8% |
| 2004 | 483 | −10.6% |
| 2003 | 540 | −22.6% |
| 2002 | 698 | −24.5% |
| 2001 | 924 | −11.0% |
| 2000 | 1,038 | −23.3% |
| 1999 | 1,354 | +3.4% |
| 1998 | 1,310 | +535.9% |
| 1997 | 206 | −14.5% |
| 1996 | 241 | +22.3% |
| 1995 | 197 | −51.2% |
| 1994 | 404 | −10.8% |
| 1993 | 453 | −15.3% |
| 1992 | 535 | −23.4% |
| 1991 | 698 | — |