The dollar figures listed in the report are gross gaming revenues, which are the difference between gaming receipts and payouts.
The report is based on independently audited financial statements received by the National Indian Gaming Commission through June 20, 2013.
Financial statements are submitted by Indian gaming operations as required by the Indian Gaming Regulatory Act.
Nationwide, the revenues represent money generated by more than 420 gaming establishments, associated with nearly 240 tribes operating in 28 states.
Sixty-four of the gaming operations were in the Tulsa Region and 53 were in the Oklahoma City Region.
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