Visitation Statistics by Year |
| 2010 | 1,014,405 |
| 2009 | 996,312 |
| 2008 | 928,795 |
| 2007 | 860,181 |
| 2006 | 833,049 |
| 2005 | 781,670 |
| 2004 | 733,131 |
| 2003 | 757,781 |
| 2002 | 769,672 |
| 2001 | 754,026 |
| 2000 | 786,429 |
| 1999 | 869,980 |
| 1998 | 837,161 |
| 1997 | 858,525 |
| 1996 | 856,016 |
| 1995 | 859,374 |
| 1994 | 777,178 |
| 1993 | 773,678 |
| 1992 | 799,831 |
| 1991 | 705,882 |
| 1990 | 620,719 |
| 1989 | 555,809 |
| 1988 | 520,455 |
| 1987 | 468,916 |
| 1986 | 419,444 |
| 1985 | 363,464 |
| 1984 | 345,180 |
| 1983 | 287,875 |
| 1982 | 339,415 |
| 1981 | 326,508 |
| 1980 | 290,519 |
| 1979 | 269,840 |
| 1978 | 326,948 |
| 1977 | 313,400 |
| 1976 | 294,800 |
| 1975 | 236,100 |
| 1974 | 166,900 |
| 1973 | 274,900 |
| 1972 | 225,128 |
| 1971 | 202,100 |
| 1970 | 178,500 |
| 1969 | 162,600 |
| 1968 | 135,600 |
| 1967 | 120,300 |
| 1966 | 128,000 |
| 1965 | 143,900 |
| 1964 | 99,700 |
| 1963 | 118,200 |
| 1962 | 105,700 |
| 1961 | 90,700 |
| 1960 | 71,600 |
| 1959 | 59,800 |
| 1958 | 40,100 |
| 1957 | 25,400 |
| 1956 | 28,500 |
| 1955 | 31,800 |
| 1954 | 31,300 |
| 1953 | 30,853 |
| 1952 | 28,683 |
| 1951 | 18,603 |
| 1950 | 16,257 |
| 1949 | 13,270 |
| 1948 | 8,870 |
| 1947 | 5,028 |
| 1946 | 2,301 |
| 1945 | 682 |
| 1944 | 642 |
| 1943 | 776 |
| 1942 | 1,205 |
| 1941 | 3,737 |
| 1940 | 2,512 |
| 1939 | 1,775 |
| 1938 | 1,448 |
| 1937 | 1,000 |
| 1936 | 400 |
| 1935 | 300 |
| 1934 | 275 |
| 1933 | 425 |
| 1932 | 480 |
| 1931 | 405 |
| 1930 | 400 |
| 1929 | 500 |
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