Visitation Statistics by Year |
| 2010 | 1,105,606 |
| 2009 | 1,109,104 |
| 2008 | 1,185,068 |
| 2007 | 1,322,817 |
| 2006 | 1,426,068 |
| 2005 | 1,474,681 |
| 2004 | 1,455,477 |
| 2003 | 1,444,668 |
| 2002 | 1,521,080 |
| 2001 | 1,410,974 |
| 2000 | 1,620,083 |
| 1999 | 1,963,187 |
| 1998 | 1,476,842 |
| 1997 | 1,673,561 |
| 1996 | 1,553,344 |
| 1995 | 1,594,596 |
| 1994 | 1,527,329 |
| 1993 | 1,317,433 |
| 1992 | 1,183,124 |
| 1991 | 1,228,332 |
| 1990 | 1,260,601 |
| 1989 | 1,367,761 |
| 1988 | 1,314,683 |
| 1987 | 1,333,900 |
| 1986 | 1,281,219 |
| 1985 | 1,194,651 |
| 1984 | 1,003,821 |
| 1983 | 864,289 |
| 1982 | 771,762 |
| 1981 | 631,684 |
| 1980 | 560,238 |
| 1979 | 673,955 |
| 1978 | 712,751 |
| 1977 | 626,500 |
| 1976 | 650,300 |
| 1975 | 524,900 |
| 1974 | 433,500 |
| 1973 | 360,600 |
| 1972 | 271,326 |
| 1971 | 222,800 |
| 1970 | 197,400 |
| 1969 | 146,800 |
| 1968 | 132,700 |
| 1967 | 102,700 |
| 1966 | 95,500 |
| 1965 | 90,100 |
| 1964 | 87,600 |
| 1963 | 72,100 |
| 1962 | 71,200 |
| 1961 | 65,800 |
| 1960 | 62,100 |
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