You own a bond with the following features: face value of $1000, coupon rate of 5% (semiannual compounding), and 15 years to maturity. The bond has a current price of $1,115. The bond is callable after 5 years with the call price of $1,050 (i.e.: the call premium is $50). What is the yield to call if the bond is called at 5 years (state as an APR)?