Tony Fowler borrowed $93,920 on March 1, 2015. This amount plus accrued interest at 12% compounded semiannually is to be repaid March 1, 2025. To retire this debt, Tony plans to contribute to a debt retirement fund five equal amounts starting on March 1, 2020, and for the next 4 years. The fund is expected to earn 11% per annum. How much must be contributed each year by Tony Fowler to provide a fund sufficient to retire the debt on March 1, 2025?