Visitation Statistics by Year |
| 2011 | 614,054 |
| 2010 | 664,725 |
| 2009 | 631,613 |
| 2008 | 543,714 |
| 2007 | 563,590 |
| 2006 | 581,681 |
| 2005 | 598,378 |
| 2004 | 580,000 |
| 2003 | 586,245 |
| 2002 | 571,586 |
| 2001 | 583,904 |
| 2000 | 605,192 |
| 1999 | 666,978 |
| 1998 | 816,506 |
| 1997 | 823,266 |
| 1996 | 829,495 |
| 1995 | 935,065 |
| 1994 | 922,927 |
| 1993 | 936,429 |
| 1992 | 930,031 |
| 1991 | 874,521 |
| 1990 | 844,592 |
| 1989 | 824,141 |
| 1988 | 857,031 |
| 1987 | 758,082 |
| 1986 | 761,257 |
| 1985 | 736,659 |
| 1984 | 714,761 |
| 1983 | 708,512 |
| 1982 | 710,619 |
| 1981 | 747,832 |
| 1980 | 683,121 |
| 1979 | 671,583 |
| 1978 | 951,402 |
| 1977 | 857,300 |
| 1976 | 1,066,200 |
| 1975 | 979,400 |
| 1974 | 781,000 |
| 1973 | 1,065,100 |
| 1972 | 1,223,473 |
| 1971 | 1,072,000 |
| 1970 | 1,151,400 |
| 1969 | 1,004,900 |
| 1968 | 869,400 |
| 1967 | 797,200 |
| 1966 | 849,800 |
| 1965 | 867,800 |
| 1964 | 884,000 |
| 1963 | 786,000 |
| 1962 | 705,000 |
| 1961 | 671,000 |
| 1960 | 911,500 |
| 1959 | 878,400 |
| 1958 | 713,100 |
| 1957 | 665,700 |
| 1956 | 603,000 |
| 1955 | 441,700 |
| 1954 | 419,800 |
| 1953 | 403,565 |
| 1952 | 374,333 |
| 1951 | 335,608 |
| 1950 | 352,889 |
| 1949 | 341,961 |
| 1948 | 343,160 |
| 1947 | 341,599 |
| 1946 | 286,507 |
| 1945 | 100,694 |
| 1944 | 40,729 |
| 1943 | 34,791 |
| 1942 | 73,029 |
| 1941 | 245,640 |
| 1940 | 199,420 |
| 1939 | 189,421 |
| 1938 | 212,547 |
| 1937 | 124,365 |
| 1936 | 161,194 |
| 1935 | 69,362 |
| 1934 | 222,666 |
| 1933 | 224,613 |
| 1932 | 84,228 |
| 1931 | 93,980 |
| 1930 | 105,433 |
| 1929 | 69,350 |
| 1928 | 75,225 |
| 1927 | 61,761 |
| 1926 | 53,345 |
| 1925 | 55,227 |
| 1924 | 42,781 |
| 1923 | 45,475 |
| 1922 | 31,338 |
| 1921 | 32,700 |
| 1920 | 30,390 |
| 1919 | 3,000 |
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