Equipment was purchased for $93,000 on January 1, 2021. Freight charges amounted to $2800 and there was a cost of $8000 for building foundation and installing the equipment. It is estimated that the equipment will have a $24,000 salvage value at the end of its five-year useful life what is the amount of accumulated depreciation at December 31, 2022 if the straight line method of depreciation is used