Visitation Statistics by Year |
| 2010 | 984,775 |
| 2009 | 828,574 |
| 2008 | 871,938 |
| 2007 | 704,122 |
| 2006 | 744,440 |
| 2005 | 800,113 |
| 2004 | 764,820 |
| 2003 | 890,375 |
| 2002 | 897,596 |
| 2001 | 1,014,636 |
| 2000 | 1,179,094 |
| 1999 | 1,227,583 |
| 1998 | 1,177,746 |
| 1997 | 1,188,212 |
| 1996 | 1,189,215 |
| 1995 | 1,109,421 |
| 1994 | 971,487 |
| 1993 | 998,474 |
| 1992 | 869,183 |
| 1991 | 743,608 |
| 1990 | 690,965 |
| 1989 | 664,449 |
| 1988 | 692,267 |
| 1987 | 665,345 |
| 1986 | 586,668 |
| 1985 | 576,679 |
| 1984 | 621,197 |
| 1983 | 635,582 |
| 1982 | 679,992 |
| 1981 | 630,402 |
| 1980 | 618,140 |
| 1979 | 631,152 |
| 1978 | 673,610 |
| 1977 | 620,400 |
| 1976 | 582,400 |
| 1975 | 545,500 |
| 1974 | 368,800 |
| 1973 | 315,400 |
| 1972 | 293,999 |
| 1971 | 290,900 |
| 1970 | 580,500 |
| 1969 | 458,800 |
| 1968 | 469,600 |
| 1967 | 476,700 |
| 1966 | 437,800 |
| 1965 | 453,000 |
| 1964 | 403,600 |
| 1963 | 408,100 |
| 1962 | 363,400 |
| 1961 | 397,900 |
| 1960 | 355,900 |
| 1959 | 335,700 |
| 1958 | 334,300 |
| 1957 | 333,400 |
| 1956 | 300,100 |
| 1955 | 342,200 |
| 1954 | 337,900 |
| 1953 | 338,899 |
| 1952 | 296,106 |
| 1951 | 219,520 |
| 1950 | 189,045 |
| 1949 | 208,557 |
| 1948 | 162,150 |
| 1947 | 161,953 |
| 1946 | 100,976 |
| 1945 | 31,112 |
| 1944 | 13,661 |
| 1943 | 14,374 |
| 1942 | 44,755 |
| 1941 | 100,829 |
| 1940 | 80,842 |
| 1939 | 61,301 |
| 1938 | 58,320 |
| 1937 | 48,874 |
| 1936 | 40,815 |
| 1935 | 42,061 |
| 1934 | 19,678 |
| 1933 | 9,970 |
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