The figure is up from $40-million generated 2 years ago.
This is according to new data released by the Oklahoma Tourism and Recreation Department.
The report shows across the board increases throughout the state in sales, job creation and tax revenue.
Miami's Convention and Visitors Bureau has been focused on creating more events throughout the year to increase tourism.
"I think it shows us that there are more people staying. Our hotel revenues are up 13-percent right now. So that does show us more people are coming to Miami and spending the night," says Miami CVB Director Amanda Davis.
Tourism had a $7.1 billion impact on the Sooner State in 2012. Visitors spent 6-percent more than in 2011.
The industry also generated 78,000 jobs last year, helping lower the state's unemployment rate from 5-percent to 4.3-percent.