| Year | Visitors |
|---|---|
| 2019 | 38,785 |
| 2018 | 38,839 |
| 2017 | 38,464 |
| 2016 | 45,514 |
| 2015 | 32,186 |
| 2014 | 35,360 |
| 2013 | 37,315 |
| 2012 | 40,830 |
| 2011 | 43,827 |
| 2010 | 39,249 |
| 2009 | 34,554 |
| 2008 | 25,139 |
| 2007 | 34,665 |
| 2006 | 35,151 |
| 2005 | 29,783 |
| 2004 | 42,529 |
| 2003 | 35,549 |
| 2002 | 40,590 |
| 2001 | 42,548 |
| 2000 | 51,825 |
| 1999 | 50,087 |
| 1998 | 45,779 |
| 1997 | 34,300 |
| 1996 | 36,891 |
| 1995 | 45,049 |
| 1994 | 38,543 |
| 1993 | 47,171 |
| 1992 | 44,446 |
| 1991 | 58,076 |
| 1990 | 0 |