In other universities, it generally means a portion of the total tuition is allocated for a specific dept or program.
Here it looks like a portion of the tuition is allocated to the athletic dept. Whether it's tuition from just those participating in the supported athletic programs or from the general university population, I don't know.
Based on the 2013 Dept of Edication data, that would amount to slightly more than $10M.
Tge 2014 data should be released in the next month, or so.