| Year | Visitors |
|---|---|
| 2019 | 97,295 |
| 2018 | 95,550 |
| 2017 | 113,103 |
| 2016 | 118,002 |
| 2015 | 80,223 |
| 2014 | 65,688 |
| 2013 | 69,624 |
| 2012 | 73,044 |
| 2011 | 70,099 |
| 2010 | 63,747 |
| 2009 | 50,689 |
| 2008 | 57,304 |
| 2007 | 33,595 |
| 2006 | 33,786 |
| 2005 | 28,734 |
| 2004 | 34,622 |
| 2003 | 31,679 |
| 2002 | 28,801 |
| 2001 | 29,194 |
| 2000 | 28,492 |
| 1999 | 27,900 |
| 1998 | 31,842 |
| 1997 | 33,976 |
| 1996 | 37,591 |
| 1995 | 31,719 |
| 1994 | 36,155 |
| 1993 | 31,075 |
| 1992 | 27,688 |
| 1991 | 30,025 |
| 1990 | 45,729 |
| 1989 | 44,829 |
| 1988 | 37,763 |
| 1987 | 39,707 |
| 1986 | 41,690 |
| 1985 | 17,908 |