ABC Company purchased equipment on January 1, 2009 for $70,000. It is estimated that the equipment will have a $5,000 salvage value at the end of its 5-year useful life. It is also estimated that the equipment will produce 100,000 units over its 5-year life. The company used the units-of-output depreciation method. If 16,500 units of product were produced in 2009 and 24,000 units were produced in 2010, what was the balance of the Accumulated Depreciation of the equipment at December 31, 2010?