Visitation Statistics by Year |
| 2011 | 1,209,883 |
| 2010 | 1,253,386 |
| 2009 | 1,120,981 |
| 2008 | 1,075,878 |
| 2007 | 1,107,227 |
| 2006 | 1,076,150 |
| 2005 | 1,094,912 |
| 2004 | 1,261,000 |
| 2003 | 1,163,950 |
| 2002 | 1,389,244 |
| 2001 | 1,498,561 |
| 2000 | 1,419,579 |
| 1999 | 1,339,286 |
| 1998 | 1,473,100 |
| 1997 | 1,587,790 |
| 1996 | 1,571,019 |
| 1995 | 1,757,794 |
| 1994 | 1,926,883 |
| 1993 | 1,951,366 |
| 1992 | 1,822,193 |
| 1991 | 1,939,486 |
| 1990 | 1,771,780 |
| 1989 | 1,873,817 |
| 1988 | 1,937,155 |
| 1987 | 1,767,727 |
| 1986 | 1,843,985 |
| 1985 | 1,933,085 |
| 1984 | 1,869,307 |
| 1983 | 1,768,378 |
| 1982 | 1,751,972 |
| 1981 | 1,819,546 |
| 1980 | 1,699,228 |
| 1979 | 1,521,451 |
| 1978 | 2,002,205 |
| 1977 | 2,789,100 |
| 1976 | 2,448,600 |
| 1975 | 2,420,600 |
| 1974 | 1,949,400 |
| 1973 | 2,308,400 |
| 1972 | 2,038,224 |
| 1971 | 2,140,600 |
| 1970 | 2,411,500 |
| 1969 | 2,400,900 |
| 1968 | 2,273,200 |
| 1967 | 2,133,100 |
| 1966 | 2,349,100 |
| 1965 | 2,289,400 |
| 1964 | 2,276,200 |
| 1963 | 2,237,800 |
| 1962 | 2,049,400 |
| 1961 | 1,929,300 |
| 1960 | 1,780,100 |
| 1959 | 1,786,700 |
| 1958 | 1,655,300 |
| 1957 | 1,655,500 |
| 1956 | 1,623,500 |
| 1955 | 1,543,400 |
| 1954 | 1,659,600 |
| 1953 | 1,673,346 |
| 1952 | 1,494,647 |
| 1951 | 1,412,499 |
| 1950 | 1,279,387 |
| 1949 | 1,157,946 |
| 1948 | 932,068 |
| 1947 | 858,630 |
| 1946 | 709,789 |
| 1945 | 542,718 |
| 1944 | 137,831 |
| 1943 | 41,831 |
| 1942 | 138,098 |
| 1941 | 1,071,199 |
| 1940 | 950,807 |
| 1939 | 911,612 |
| 1938 | 954,967 |
| 1937 | 1,041,204 |
| 1936 | 694,098 |
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