Blue Co. purchased equipment on October 4, 20X1 at a cost of $63,000. The equipment has an estimated useful life of 4 years and an estimated salvage value of $3,000. Blue Co. uses the double-declining balance depreciation method. Blue Co.s fiscal year-end is December 31. Assuming Blue Co. uses the half-year convention, what was the accumulated depreciation as of December 31, 20X2? (Round all results to the nearest whole dollar.)