| Year | Total | vs prev |
|---|---|---|
| 2021 | 0 | −100.0% |
| 2020 | 1,009 | −82.9% |
| 2019 | 5,915 | −34.6% |
| 2018 | 9,040 | −61.8% |
| 2017 | 23,676 | −8.4% |
| 2016 | 25,860 | −6.9% |
| 2015 | 27,770 | −8.1% |
| 2014 | 30,203 | +8.8% |
| 2013 | 27,766 | −9.1% |
| 2012 | 30,532 | −24.8% |
| 2011 | 40,617 | −11.6% |
| 2010 | 45,956 | +3.5% |
| 2009 | 44,387 | −13.1% |
| 2008 | 51,093 | −10.8% |
| 2007 | 57,307 | +1.4% |
| 2006 | 56,531 | −15.4% |
| 2005 | 66,794 | −15.6% |
| 2004 | 79,170 | −8.5% |
| 2003 | 86,553 | −2.2% |
| 2002 | 88,478 | +3.6% |
| 2001 | 85,422 | +2.2% |
| 2000 | 83,610 | −2.4% |
| 1999 | 85,648 | −9.5% |
| 1998 | 94,635 | +23.1% |
| 1997 | 76,849 | −7.4% |
| 1996 | 83,001 | +3.2% |
| 1995 | 80,452 | +6.8% |
| 1994 | 75,330 | +20.2% |
| 1993 | 62,663 | −0.2% |
| 1992 | 62,814 | +23.6% |
| 1991 | 50,817 | — |