Suppose that a parcel of 5.75%15 July 2022 Treasury bonds was purchased at 5% on 15 July 2015 and then sold on 15 July 2017 at a yield of 6%. Assume a face value of $100 per bond. If the coupons were reinvested at 5.5% per annum, calculate the investor's holding-period yield (as a percentage). Round your final answer to 2 decimal places