Gamblers lost over $400 million at the Forest County Potawatomi casino in Milwaukee over the last fiscal year. That's more than they lost the previous year. Wisconsin tribes' casino revenue is confidential, but the Milwaukee Journal Sentinel was able to calculate the figures. That's because the Potawatomi pay the city and county of Milwaukee part of its net win. The tribe paid almost $6 million to each government entity for the year that ended June 30. The net win doesn't include revenue generated by the casino's restaurants, concerts and hotel.