| Year | Visitors |
|---|---|
| 2019 | 9,602 |
| 2018 | 10,961 |
| 2017 | 10,738 |
| 2016 | 9,589 |
| 2015 | 7,589 |
| 2014 | 9,045 |
| 2013 | 7,013 |
| 2012 | 8,276 |
| 2011 | 10,779 |
| 2010 | 12,331 |
| 2009 | 9,853 |
| 2008 | 7,367 |
| 2007 | 8,026 |
| 2006 | 7,803 |
| 2005 | 7,968 |
| 2004 | 10,913 |
| 2003 | 11,517 |
| 2002 | 12,323 |
| 2001 | 10,147 |
| 2000 | 9,514 |
| 1999 | 9,645 |
| 1998 | 9,405 |
| 1997 | 8,411 |
| 1996 | 8,536 |
| 1995 | 9,433 |
| 1994 | 10,269 |
| 1993 | 9,251 |
| 1992 | 6,396 |
| 1991 | 5,241 |
| 1990 | 5,938 |
| 1989 | 5,625 |
| 1988 | 5,419 |
| 1987 | 4,432 |
| 1986 | 3,107 |
| 1985 | 1,428 |