I know it's not broken down by park, but per the Miami Herald article just posted by LOL in another thread...
"Attendance: Like most parks, Disney does not make its gate figures public. However, the Themed Entertainment Association estimated the total number of guests at Disney World’s four parks at 51.5 million in 2014. Magic Kingdom has more guests than any other park in the world, at 19.3 million; all four rank in the Top 10 in the world. Florida’s four Disney parks and California’s two are the top six parks in the U.S. for number of visitors."
Read more here:
http://www.miamiherald.com/news/business/biz-monday/article55022535.html#storylink=cpy