| Year | Visitors |
|---|---|
| 2019 | 324 |
| 2018 | 330 |
| 2017 | 399 |
| 2016 | 463 |
| 2015 | 120 |
| 2014 | 321 |
| 2013 | 703 |
| 2012 | 694 |
| 2011 | 873 |
| 2010 | 1,103 |
| 2009 | 947 |
| 2008 | 1,606 |
| 2007 | 1,660 |
| 2006 | 135 |
| 2005 | 319 |
| 2004 | 588 |
| 2003 | 656 |
| 2002 | 939 |
| 2001 | 1,086 |
| 2000 | 909 |
| 1999 | 678 |
| 1998 | 462 |
| 1997 | 489 |
| 1996 | 498 |
| 1995 | 493 |
| 1994 | 693 |
| 1993 | 470 |
| 1992 | 962 |
| 1991 | 628 |
| 1990 | 525 |
| 1989 | 662 |
| 1988 | 822 |
| 1987 | 743 |
| 1986 | 805 |
| 1985 | 702 |