Revenues, which produced 13.2%, 12.9% and 11.9%, respectively, of gross revenues for the years ended December 31, 2005, 20, represent the only other revenue source which produced more than 10% of gross revenues during these periods.
We derive the majority of our gross revenues from our gaming operations, which produced 74%, 75% and 77%, respectively, of gross revenues for the years ended December 31, 2005, 20. As of December 31, 2005, we owned an aggregate of approximately 969,500 square feet of casino space, containing 26,751 Our 18 wholly-owned casino facilities, which we operate, are located in nine distinct gaming markets in five states.
We are a multi-jurisdictional gaming company that has been operating for approximately 30