Visitation Statistics by Year |
| 2010 | 2,200,048 |
| 2009 | 2,031,348 |
| 2008 | 1,808,027 |
| 2007 | 2,083,329 |
| 2006 | 1,964,399 |
| 2005 | 1,925,101 |
| 2004 | 2,033,933 |
| 2003 | 1,664,046 |
| 2002 | 1,905,689 |
| 2001 | 1,680,614 |
| 2000 | 1,728,693 |
| 1999 | 1,684,604 |
| 1998 | 1,830,944 |
| 1997 | 1,708,856 |
| 1996 | 1,720,805 |
| 1995 | 1,839,518 |
| 1994 | 2,152,989 |
| 1993 | 2,141,704 |
| 1992 | 2,199,767 |
| 1991 | 2,096,966 |
| 1990 | 1,986,737 |
| 1989 | 1,821,523 |
| 1988 | 1,817,733 |
| 1987 | 1,660,737 |
| 1986 | 1,579,151 |
| 1985 | 1,603,011 |
| 1984 | 1,946,703 |
| 1983 | 2,203,847 |
| 1982 | 1,666,114 |
| 1981 | 1,786,523 |
| 1980 | 1,474,578 |
| 1979 | 1,446,086 |
| 1978 | 1,582,632 |
| 1977 | 1,654,500 |
| 1976 | 1,661,200 |
| 1975 | 1,570,000 |
| 1974 | 1,405,500 |
| 1973 | 1,397,800 |
| 1972 | 1,391,299 |
| 1971 | 1,302,200 |
| 1970 | 1,241,600 |
| 1969 | 1,051,200 |
| 1968 | 964,500 |
| 1967 | 884,000 |
| 1966 | 907,800 |
| 1965 | 847,100 |
| 1964 | 642,200 |
| 1963 | 810,200 |
| 1962 | 966,100 |
| 1961 | 740,000 |
| 1960 | 724,500 |
| 1959 | 722,300 |
| 1958 | 706,800 |
| 1957 | 759,200 |
| 1956 | 718,900 |
| 1955 | 674,100 |
| 1954 | 608,200 |
| 1953 | 633,480 |
| 1952 | 649,689 |
| 1951 | 496,142 |
| 1950 | 482,298 |
| 1949 | 482,208 |
| 1948 | 284,549 |
| 1947 | 327,300 |
| 1946 | 200,547 |
| 1945 | 67,942 |
| 1944 | 35,857 |
| 1943 | 23,908 |
| 1942 | 62,196 |
| 1941 | 178,449 |
| 1940 | 177,307 |
| 1939 | 170,073 |
| 1938 | 153,528 |
| 1937 | 194,522 |
| 1936 | 210,072 |
| 1935 | 143,240 |
| 1934 | 116,965 |
| 1933 | 76,715 |
| 1932 | 53,202 |
| 1931 | 63,497 |
| 1930 | 73,776 |
| 1929 | 70,742 |
| 1928 | 53,454 |
| 1927 | 41,745 |
| 1926 | 37,325 |
| 1925 | 40,063 |
| 1924 | 33,372 |
| 1923 | 33,988 |
| 1922 | 23,935 |
| 1921 | 19,736 |
| 1920 | 22,449 |
| 1919 | 18,956 |
| 1918 | 9,086 |
| 1917 | 18,387 |
| 1916 | 12,839 |
| 1915 | 14,265 |
| 1914 | 14,168 |
| 1913 | 12,138 |
| 1912 | 6,257 |
| 1911 | 4,000 |
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