| Year | Visitors |
|---|---|
| 2019 | 105,403 |
| 2018 | 97,950 |
| 2017 | 103,956 |
| 2016 | 99,660 |
| 2015 | 89,592 |
| 2014 | 84,257 |
| 2013 | 81,174 |
| 2012 | 106,309 |
| 2011 | 111,725 |
| 2010 | 104,855 |
| 2009 | 65,144 |
| 2008 | 71,123 |
| 2007 | 70,726 |
| 2006 | 61,178 |
| 2005 | 88,031 |
| 2004 | 106,433 |
| 2003 | 114,855 |
| 2002 | 127,766 |
| 2001 | 128,435 |
| 2000 | 160,421 |
| 1999 | 178,208 |
| 1998 | 185,274 |
| 1997 | 182,827 |
| 1996 | 168,970 |
| 1995 | 211,553 |
| 1994 | 130,129 |
| 1993 | 152,947 |
| 1992 | 151,079 |
| 1991 | 91,417 |
| 1990 | 119,990 |
| 1989 | 101,761 |