| Year | Visitors |
|---|---|
| 2019 | 47,630 |
| 2018 | 54,649 |
| 2017 | 67,621 |
| 2016 | 63,480 |
| 2015 | 64,791 |
| 2014 | 60,456 |
| 2013 | 43,686 |
| 2012 | 55,049 |
| 2011 | 50,074 |
| 2010 | 53,067 |
| 2009 | 54,393 |
| 2008 | 53,632 |
| 2007 | 59,846 |
| 2006 | 14,493 |
| 2005 | 52,690 |
| 2004 | 53,765 |
| 2003 | 58,843 |
| 2002 | 71,189 |
| 2001 | 86,012 |
| 2000 | 76,958 |
| 1999 | 65,703 |
| 1998 | 85,347 |
| 1997 | 85,226 |
| 1996 | 93,998 |
| 1995 | 84,879 |
| 1994 | 82,999 |
| 1993 | 90,136 |
| 1992 | 89,363 |
| 1991 | 77,632 |
| 1990 | 42,833 |
| 1989 | 36,466 |
| 1988 | 29,158 |
| 1987 | 28,814 |
| 1986 | 30,313 |
| 1985 | 30,712 |