Visitation Statistics by Year |
| 2011 | 177,184 |
| 2010 | 253,891 |
| 2009 | 222,429 |
| 2008 | 221,585 |
| 2007 | 220,650 |
| 2006 | 231,875 |
| 2005 | 234,577 |
| 2004 | 249,041 |
| 2003 | 234,231 |
| 2002 | 238,227 |
| 2001 | 243,374 |
| 2000 | 227,371 |
| 1999 | 228,898 |
| 1998 | 231,958 |
| 1997 | 223,418 |
| 1996 | 246,588 |
| 1995 | 210,938 |
| 1994 | 224,181 |
| 1993 | 228,143 |
| 1992 | 227,498 |
| 1991 | 221,857 |
| 1990 | 223,554 |
| 1989 | 209,626 |
| 1988 | 223,735 |
| 1987 | 201,727 |
| 1986 | 172,137 |
| 1985 | 183,984 |
| 1984 | 154,723 |
| 1983 | 146,454 |
| 1982 | 143,724 |
| 1981 | 257,490 |
| 1980 | 266,935 |
| 1979 | 195,277 |
| 1978 | 255,426 |
| 1977 | 140,300 |
| 1976 | 121,200 |
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