A new national study says Alabama's Creek Indian casinos have experienced record-setting growth for the fourth year due to the state's crackdown on privately operated casino. The Indian Gambling Industry Report by Casino City said revenue for Alabama's Indian casinos grew by 26.4% in 2011. That was the fourth straight year where Alabama led the nation in revenue growth for Indian gambling. The Poarch Band of Creek Indians increased the number of gambling machines it operated at its Montgomery, Atmore and Wetumpka casinos by 28% in 2011. The machines totaled 4,200 at year's end. The Creeks expanded their Montgomery casino in 2011 and are expanding their Wetumpka operation. The report does not include dollar figures due to confidentiality agreements.