| Year | Visitors |
|---|---|
| 2019 | 39,449 |
| 2018 | 43,602 |
| 2017 | 59,761 |
| 2016 | 46,071 |
| 2015 | 39,048 |
| 2014 | 40,287 |
| 2013 | 38,604 |
| 2012 | 39,373 |
| 2011 | 35,664 |
| 2010 | 39,967 |
| 2009 | 40,703 |
| 2008 | 45,959 |
| 2007 | 46,398 |
| 2006 | 25,758 |
| 2005 | 24,868 |
| 2004 | 22,797 |
| 2003 | 22,248 |
| 2002 | 25,531 |
| 2001 | 22,421 |
| 2000 | 17,894 |
| 1999 | 20,635 |
| 1998 | 19,134 |
| 1997 | 14,040 |
| 1996 | 14,124 |
| 1995 | 7,539 |
| 1994 | 5,016 |
| 1993 | 2,983 |
| 1992 | 1,366 |
| 1991 | 524 |