Visitation Statistics by Year |
| 2008 | 1,043,321 |
| 2007 | 1,012,563 |
| 2006 | 890,676 |
| 2005 | 1,017,681 |
| 2004 | 987,253 |
| 2003 | 903,760 |
| 2002 | 886,436 |
| 2001 | 1,068,619 |
| 2000 | 1,099,275 |
| 1999 | 1,081,521 |
| 1998 | 1,166,331 |
| 1997 | 1,174,824 |
| 1996 | 1,269,600 |
| 1995 | 994,548 |
| 1994 | 1,028,134 |
| 1993 | 1,107,951 |
| 1992 | 1,018,174 |
| 1991 | 929,067 |
| 1990 | 862,659 |
| 1989 | 808,045 |
| 1988 | 791,348 |
| 1987 | 718,342 |
| 1986 | 578,018 |
| 1985 | 500,782 |
| 1984 | 495,104 |
| 1983 | 472,633 |
| 1982 | 471,517 |
| 1981 | 474,092 |
| 1980 | 571,541 |
| 1979 | 558,095 |
| 1978 | 679,260 |
| 1977 | 611,500 |
| 1976 | 625,600 |
| 1975 | 579,200 |
| 1974 | 408,800 |
| 1973 | 429,700 |
| 1972 | 424,830 |
| 1971 | 377,800 |
| 1970 | 345,900 |
| 1969 | 366,900 |
| 1968 | 320,800 |
| 1967 | 295,000 |
| 1966 | 396,600 |
| 1965 | 366,800 |
| 1964 | 300,300 |
| 1963 | 289,500 |
| 1962 | 251,000 |
| 1961 | 264,800 |
| 1960 | 272,000 |
| 1959 | 278,300 |
| 1958 | 248,500 |
| 1957 | 263,000 |
| 1956 | 257,600 |
| 1955 | 254,200 |
| 1954 | 238,200 |
| 1953 | 242,820 |
| 1952 | 225,113 |
| 1951 | 224,801 |
| 1950 | 212,976 |
| 1949 | 192,552 |
| 1948 | 175,975 |
| 1947 | 163,172 |
| 1946 | 125,828 |
| 1945 | 33,463 |
| 1944 | 10,311 |
| 1943 | 7,690 |
| 1942 | 30,019 |
| 1941 | 124,563 |
| 1940 | 103,362 |
| 1939 | 101,500 |
| 1938 | 101,851 |
| 1937 | 94,331 |
| 1936 | 88,848 |
| 1935 | 63,703 |
| 1934 | 51,188 |
| 1933 | 32,878 |
| 1932 | 34,143 |
| 1931 | 41,572 |
| 1930 | 35,982 |
| 1929 | 21,997 |
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