You purchased a $1000 face value zero-coupon bond one year ago for $273.92. The market interest rate is now 6.78 percent. If the bond had 19 years to maturity when you originally purchased it, what was your total return for the past year?Assume semiannual compounding. Answer as a percentage to two decimals (if you get -0.0435, you should answer -4.35). Thank you!!