| Year | Visitors |
|---|---|
| 2019 | 37,663 |
| 2018 | 31,316 |
| 2017 | 32,028 |
| 2016 | 34,139 |
| 2015 | 36,733 |
| 2014 | 38,450 |
| 2013 | 36,266 |
| 2012 | 36,842 |
| 2011 | 41,670 |
| 2010 | 37,790 |
| 2009 | 45,904 |
| 2008 | 46,942 |
| 2007 | 48,061 |
| 2006 | 46,093 |
| 2005 | 45,146 |
| 2004 | 39,590 |
| 2003 | 50,302 |
| 2002 | 55,115 |
| 2001 | 55,763 |
| 2000 | 51,738 |
| 1999 | 58,610 |
| 1998 | 56,983 |
| 1997 | 67,836 |
| 1996 | 64,651 |
| 1995 | 63,465 |
| 1994 | 66,089 |
| 1993 | 51,848 |