Big Ten Trucking purchased a new truck on January 1, 2018, at a cost of $70,000. The estimated useful life of the truck at the time of the purchase was 5 years, with an estimated salvage value of $5,000. On January 1, 2021, the controller revised the total estimated useful life to 7 years with a revised salvage value of $3,500. Assuming the straight-line method is used, how much would Big Ten Trucking record for depreciation expense for the year ended December 31, 2021