Amazon Inc. has semiannual coupon bonds with 8% coupon rate and 17 years remaining to maturity. The bonds are selling for 61% of par value. What is the (annual) yield of maturity of the bonds? Note that the price is % of par value. For example, 120% suggests $1,200 price for $1,000 par value (or $120 price for $100 par value) Yield to maturity = __________%