For this question, assume semi-annual compounding and coupons. Suppose that you observe a 7-year 9% coupon bond trading in the market at par (i.e., the price per $100 face is $100). What is the yield of this bond? Enter your answer in percent per year, rounding to two decimal places. For example, if you find that the yield is 0.01234 (or 1.234%), enter your answer as 1.23. If there is not enough information to answer this question, please enter 0.

Please briefly explain how you got your answer to the question above. One or two sentences should be enough. If you calculated the value using a formula, please write down the formula and the inputs.