Numbers from 2015 graduates normally are not published for at least a year after that. It does take time to receive survey results, run the data and analyze the results. Based off of your post I take it you have not looked at gainful employment information. Right now it is for 13-14 graduates which is 20 months ago so you can expect 14-15 numbers to be out in by May 2016. They also will not publish results until all programs offered during that academic year are complete.
But you aren't probably all that concerned about this and still will not understand.