| Year | Visitors |
|---|---|
| 2019 | 2,944 |
| 2018 | 3,432 |
| 2017 | 3,931 |
| 2016 | 4,287 |
| 2015 | 3,942 |
| 2014 | 3,202 |
| 2013 | 2,929 |
| 2012 | 2,789 |
| 2011 | 2,593 |
| 2010 | 2,445 |
| 2009 | 3,783 |
| 2008 | 2,544 |
| 2007 | 2,339 |
| 2006 | 3,372 |
| 2005 | 3,652 |
| 2004 | 2,684 |
| 2003 | 2,672 |
| 2002 | 3,496 |
| 2001 | 3,510 |
| 2000 | 3,579 |
| 1999 | 3,400 |
| 1998 | 3,616 |
| 1997 | 3,497 |
| 1996 | 3,440 |
| 1995 | 3,112 |
| 1994 | 3,031 |
| 1993 | 3,007 |
| 1992 | 3,692 |
| 1991 | 3,282 |
| 1990 | 3,654 |
| 1989 | 3,129 |
| 1988 | 4,218 |
| 1987 | 3,529 |
| 1986 | 2,639 |
| 1985 | 2,814 |