| Year | Visitors |
|---|---|
| 2019 | 293,957 |
| 2018 | 268,613 |
| 2017 | 141,803 |
| 2016 | 124,177 |
| 2015 | 117,825 |
| 2014 | 115,859 |
| 2013 | 115,075 |
| 2012 | 119,444 |
| 2011 | 114,428 |
| 2010 | 105,643 |
| 2009 | 118,688 |
| 2008 | 116,620 |
| 2007 | 112,868 |
| 2006 | 121,825 |
| 2005 | 102,623 |
| 2004 | 97,498 |
| 2003 | 58,101 |
| 2002 | 59,222 |
| 2001 | 60,608 |
| 2000 | 61,170 |
| 1999 | 72,604 |
| 1998 | 77,537 |
| 1997 | 92,209 |
| 1996 | 90,533 |
| 1995 | 88,196 |
| 1994 | 85,869 |
| 1993 | 66,870 |
| 1992 | 68,065 |