Visitation Statistics by Year |
| 2011 | 423,551 |
| 2010 | 448,319 |
| 2009 | 446,516 |
| 2008 | 415,686 |
| 2007 | 468,958 |
| 2006 | 388,972 |
| 2005 | 447,240 |
| 2004 | 417,066 |
| 2003 | 479,183 |
| 2002 | 456,620 |
| 2001 | 457,373 |
| 2000 | 426,883 |
| 1999 | 417,992 |
| 1998 | 471,865 |
| 1997 | 451,548 |
| 1996 | 476,957 |
| 1995 | 496,041 |
| 1994 | 454,215 |
| 1993 | 381,747 |
| 1992 | 461,668 |
| 1991 | 456,931 |
| 1990 | 384,941 |
| 1989 | 430,734 |
| 1988 | 443,430 |
| 1987 | 460,550 |
| 1986 | 402,789 |
| 1985 | 390,604 |
| 1984 | 419,829 |
| 1983 | 379,008 |
| 1982 | 435,589 |
| 1981 | 503,404 |
| 1980 | 455,143 |
| 1979 | 410,749 |
| 1978 | 553,374 |
| 1977 | 558,300 |
| 1976 | 532,700 |
| 1975 | 356,500 |
| 1974 | 496,100 |
| 1973 | 505,300 |
| 1972 | 566,655 |
| 1971 | 535,000 |
| 1970 | 535,000 |
| 1969 | 544,900 |
| 1968 | 578,300 |
| 1967 | 499,400 |
| 1966 | 552,500 |
| 1965 | 480,500 |
| 1964 | 494,100 |
| 1963 | 475,700 |
| 1962 | 592,400 |
| 1961 | 415,600 |
| 1960 | 397,700 |
| 1959 | 341,000 |
| 1958 | 333,900 |
| 1957 | 330,500 |
| 1956 | 359,800 |
| 1955 | 343,800 |
| 1954 | 370,600 |
| 1953 | 332,835 |
| 1952 | 312,677 |
| 1951 | 289,286 |
| 1950 | 310,796 |
| 1949 | 330,829 |
| 1948 | 313,580 |
| 1947 | 378,000 |
| 1946 | 208,640 |
| 1945 | 79,535 |
| 1944 | 44,389 |
| 1943 | 28,850 |
| 1942 | 88,568 |
| 1941 | 274,002 |
| 1940 | 252,482 |
| 1939 | 225,101 |
| 1938 | 190,699 |
| 1937 | 202,403 |
| 1936 | 180,382 |
| 1935 | 107,701 |
| 1934 | 118,699 |
| 1933 | 90,512 |
| 1932 | 109,738 |
| 1931 | 170,284 |
| 1930 | 157,693 |
| 1929 | 128,435 |
| 1928 | 113,323 |
| 1927 | 82,354 |
| 1926 | 86,019 |
| 1925 | 65,018 |
| 1924 | 64,312 |
| 1923 | 52,017 |
| 1922 | 33,016 |
| 1921 | 28,617 |
| 1920 | 20,135 |
| 1919 | 16,645 |
| 1918 | 13,231 |
| 1917 | 11,645 |
| 1916 | 12,265 |
| 1915 | 11,371 |
| 1914 | 7,096 |
| 1913 | 6,253 |
| 1912 | 5,235 |
| 1911 | 4,500 |
| 1910 | 5,000 |
| 1909 | 4,171 |
| 1908 | 5,275 |
| 1907 | 2,600 |
| 1906 | 1,800 |
| 1905 | 1,400 |
| 1904 | 1,500 |
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