| Year | Total | vs prev |
|---|---|---|
| 2026 YTD | 6,277 | −20.6% |
| 2025 | 18,968 | −21.1% |
| 2024 | 24,027 | +20.2% |
| 2023 | 19,986 | −21.0% |
| 2022 | 25,284 | −12.1% |
| 2021 | 28,768 | +11.2% |
| 2020 | 25,882 | −15.1% |
| 2019 | 30,468 | −13.7% |
| 2018 | 35,320 | −5.4% |
| 2017 | 37,353 | −7.4% |
| 2016 | 40,330 | −4.1% |
| 2015 | 42,073 | −3.8% |
| 2014 | 43,735 | +0.5% |
| 2013 | 43,498 | +12.1% |
| 2012 | 38,799 | +7.5% |
| 2011 | 36,087 | −13.3% |
| 2010 | 41,632 | +6.7% |
| 2009 | 39,013 | −18.6% |
| 2008 | 47,901 | +0.2% |
| 2007 | 47,792 | +3.3% |
| 2006 | 46,256 | −0.3% |
| 2005 | 46,415 | +18.9% |
| 2004 | 39,053 | +8.1% |
| 2003 | 36,128 | +3.4% |
| 2002 | 34,948 | +13.4% |
| 2001 | 30,813 | +0.8% |
| 2000 | 30,576 | +7.7% |
| 1999 | 28,387 | +13.2% |
| 1998 | 25,079 | +12.4% |
| 1997 | 22,319 | −3.8% |
| 1996 | 23,208 | +0.3% |
| 1995 | 23,142 | +7.8% |
| 1994 | 21,472 | −6.6% |
| 1993 | 22,980 | −8.0% |
| 1992 | 24,969 | +0.3% |
| 1991 | 24,901 | — |