Patterson Bus Lines uses the units-of-activity method in depreciating its buses. One bus was purchased on May 1, 2016, at a cost of $100,000. Over its 4-year useful life, the bus is expected to be driven 160,000 miles. Salvage value is expected to be $5,600.

Prepare a depreciation schedule assuming actual mileage was: 2016, 40,000; 2017, 52,000; 2018, 41,000; and 2019, 27,000.