I need help figuring out the depreciation expense for each of these 4 years,

On January 1, 2014, Muoy Machining Co. purchased a compressor and related installation equipment for $71,100. The equipment had a three-year estimated life with a $3,300 salvage value. Straight-line depreciation was used. At the beginning of 2016, Muoy revised the expected life of the asset to four years rather than three years. The salvage value was revised to $2,300 Required Compute the depreciation expense for each of the four years