Visitation Statistics by Year |
| 2010 | 372,330 |
| 2009 | 363,905 |
| 2008 | 362,512 |
| 2007 | 364,856 |
| 2006 | 298,717 |
| 2005 | 398,583 |
| 2004 | 357,723 |
| 2003 | 312,384 |
| 2002 | 327,747 |
| 2001 | 328,927 |
| 2000 | 262,320 |
| 1999 | 327,649 |
| 1998 | 338,442 |
| 1997 | 305,882 |
| 1996 | 279,454 |
| 1995 | 295,460 |
| 1994 | 330,417 |
| 1993 | 327,907 |
| 1992 | 294,535 |
| 1991 | 296,470 |
| 1990 | 257,378 |
| 1989 | 281,728 |
| 1988 | 239,595 |
| 1987 | 227,921 |
| 1986 | 200,622 |
| 1985 | 188,045 |
| 1984 | 167,665 |
| 1983 | 164,926 |
| 1982 | 180,144 |
| 1981 | 167,332 |
| 1980 | 174,008 |
| 1979 | 282,941 |
| 1978 | 301,198 |
| 1977 | 334,000 |
| 1976 | 378,600 |
| 1975 | 275,500 |
| 1974 | 158,700 |
| 1973 | 283,300 |
| 1972 | 240,904 |
| 1971 | 205,000 |
| 1970 | 172,600 |
| 1969 | 199,800 |
| 1968 | 191,800 |
| 1967 | 173,300 |
| 1966 | 163,500 |
| 1965 | 174,600 |
| 1964 | 119,700 |
| 1963 | 114,200 |
| 1962 | 91,000 |
| 1961 | 90,600 |
| 1960 | 75,900 |
| 1959 | 70,400 |
| 1958 | 72,600 |
| 1957 | 75,000 |
| 1956 | 89,700 |
| 1955 | 81,000 |
| 1954 | 67,300 |
| 1953 | 86,635 |
| 1952 | 94,367 |
| 1951 | 84,051 |
| 1950 | 70,325 |
| 1949 | 62,150 |
| 1948 | 45,670 |
| 1947 | 28,652 |
| 1946 | 10,037 |
| 1945 | 3,205 |
| 1944 | 1,409 |
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