Miss. gaming tax receipts

During my last trip south, I noticed all the casinos were much more crowded than during previous trips. This led me to wonder how much of former Gulf Coast business has moved up to places like Natchez, Vicksburg, Tunica, and even over into Louisiana.

Does anyone here have any recent info on total gaming tax receipts for Mississippi? This might give some clue as to how much action has been lost, and how much has simply migrated north.