| Year | Visitors |
|---|---|
| 2019 | 143,427 |
| 2018 | 186,937 |
| 2017 | 166,894 |
| 2016 | 145,500 |
| 2015 | 167,790 |
| 2014 | 272,731 |
| 2013 | 276,374 |
| 2012 | 269,885 |
| 2011 | 273,862 |
| 2010 | 277,681 |
| 2009 | 279,803 |
| 2008 | 281,512 |
| 2007 | 327,047 |
| 2006 | 343,774 |
| 2005 | 332,935 |
| 2004 | 343,468 |
| 2003 | 332,538 |
| 2002 | 344,563 |
| 2001 | 303,342 |
| 2000 | 272,506 |
| 1999 | 246,920 |
| 1998 | 23,710 |