Visitation Statistics by Year |
| 2008 | 332,177 |
| 2007 | 360,806 |
| 2006 | 375,256 |
| 2005 | 434,107 |
| 2004 | 537,716 |
| 2003 | 585,919 |
| 2002 | 613,935 |
| 2001 | 520,428 |
| 2000 | 482,571 |
| 1999 | 607,057 |
| 1998 | 574,270 |
| 1997 | 488,757 |
| 1996 | 490,715 |
| 1995 | 525,882 |
| 1994 | 175,226 |
| 1993 | 184,867 |
| 1992 | 169,181 |
| 1991 | 149,263 |
| 1990 | 144,083 |
| 1989 | 152,662 |
| 1988 | 168,592 |
| 1987 | 174,607 |
| 1986 | 172,913 |
| 1985 | 164,132 |
| 1984 | 203,411 |
| 1983 | 205,024 |
| 1982 | 172,287 |
| 1981 | 87,514 |
| 1980 | 104,574 |
| 1979 | 82,937 |
| 1978 | 46,416 |
| 1977 | 87,200 |
| 1976 | 92,600 |
| 1975 | 74,400 |
| 1974 | 31,000 |
| 1973 | 44,700 |
| 1972 | 31,947 |
| 1971 | 24,400 |
| 1970 | 32,000 |
| 1969 | 33,100 |
| 1968 | 31,000 |
| 1967 | 15,700 |
| 1966 | 300 |
| 1965 | 1,600 |
| 1964 | 1,500 |
| 1963 | 1,200 |
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