| Year | Visitors |
|---|---|
| 2019 | 1,114 |
| 2018 | 1,272 |
| 2017 | 952 |
| 2016 | 1,146 |
| 2015 | 1,133 |
| 2014 | 2,329 |
| 2013 | 3,914 |
| 2012 | 1,393 |
| 2011 | 1,718 |
| 2010 | 6,211 |
| 2009 | 6,432 |
| 2008 | 4,942 |
| 2007 | 11,567 |
| 2006 | 12,083 |
| 2005 | 12,784 |
| 2004 | 4,260 |
| 2003 | 5,552 |
| 2002 | 5,144 |
| 2001 | 6,571 |
| 2000 | 3,677 |
| 1999 | 4,072 |
| 1998 | 4,451 |
| 1997 | 1,856 |
| 1996 | 1,005 |
| 1995 | 658 |
| 1994 | 646 |
| 1993 | 1,951 |
| 1992 | 2,430 |
| 1991 | 2,050 |
| 1990 | 1,965 |
| 1989 | 916 |
| 1988 | 1,255 |
| 1987 | 1,789 |
| 1986 | 1,707 |
| 1985 | 2,073 |
| 1984 | 988 |
| 1983 | 955 |
| 1982 | 697 |