You purchased a zero-coupon bond one year ago for $283.33. The market interest rate is now 9 percent. Assume semiannual compounding. If the bond had 15 years to maturity when you originally purchased it, what was your total return for the past year? Note: Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16. Total return for the past year