Jim Robertson Motors has bonds outstanding which will mature in 12 years. The bonds pay a 12 percent semiannual coupon and have a face value of $1,000 (i.e., the bonds pay a $60 coupon every six months). The bonds currently have a yield to maturity of 10 percent. The bonds are callable in 8 years and have a call price of $1,050. What are the bonds' yield to call?