Visitation Statistics by Year |
| 2008 | 604,811 |
| 2007 | 554,907 |
| 2006 | 511,511 |
| 2005 | 550,255 |
| 2004 | 549,708 |
| 2003 | 535,441 |
| 2002 | 525,646 |
| 2001 | 527,760 |
| 2000 | 612,656 |
| 1999 | 680,153 |
| 1998 | 656,026 |
| 1997 | 625,680 |
| 1996 | 678,012 |
| 1995 | 648,864 |
| 1994 | 605,324 |
| 1993 | 610,707 |
| 1992 | 675,837 |
| 1991 | 618,056 |
| 1990 | 562,477 |
| 1989 | 515,278 |
| 1988 | 469,556 |
| 1987 | 428,808 |
| 1986 | 383,742 |
| 1985 | 320,503 |
| 1984 | 296,230 |
| 1983 | 331,734 |
| 1982 | 289,486 |
| 1981 | 397,789 |
| 1980 | 342,788 |
| 1979 | 288,860 |
| 1978 | 392,428 |
| 1977 | 428,800 |
| 1976 | 425,100 |
| 1975 | 263,400 |
| 1974 | 214,100 |
| 1973 | 288,800 |
| 1972 | 251,163 |
| 1971 | 225,500 |
| 1970 | 225,900 |
| 1969 | 210,600 |
| 1968 | 171,000 |
| 1967 | 146,600 |
| 1966 | 94,000 |
| 1965 | 108,500 |
| 1964 | 92,500 |
| 1963 | 93,200 |
| 1962 | 163,500 |
| 1961 | 136,800 |
| 1960 | 102,500 |
| 1959 | 89,600 |
| 1958 | 65,000 |
| 1957 | 56,900 |
| 1956 | 62,500 |
| 1955 | 7,500 |
| 1954 | 12,900 |
| 1953 | 9,991 |
| 1952 | 6,411 |
| 1951 | 13,192 |
| 1950 | 3,066 |
| 1949 | 0 |
| 1948 | 0 |
| 1947 | 0 |
| 1946 | 0 |
| 1945 | 0 |
| 1944 | 0 |
| 1943 | 0 |
| 1942 | 0 |
| 1941 | 1,975 |
| 1940 | 2,000 |
| 1939 | 1,500 |
| 1938 | 1,500 |
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