Augie Corporation purchased a truck at a cost of $66,000. It has an estimated useful life of five years and estimated residual value of $6,000. At the beginning of year three, Augie's managers concluded that the total useful life would be four years, rather than five years. There was no change in the estimated residual value. What is the amount of depreciation that Augie should record for year 3 under the straight-line depreciation method