Jenson Supply bought equipment at a cost of $24,000 on January 2, 2002. It originally had an estimated life of ten years and a salvage value of $4,000. Jenson uses the straight-line depreciation method. On December 31, 2006, Jenson decided the useful life likely would end on December 31, 2007, with a salvage value of $2,000. The depreciation expense recorded on December 31, 2006, should be?