Assume the zero-coupon yields on default-free securities are as summarized in the following table: Maturity Zero-Coupon Yields 1 year 3.40% 2 years 4.00% 3 years 4.20% 4 years 4.50% 5 years 4.80% Consider a four-year, default-free security with annual coupon payments and a face value of $1,000 that is issued at par. What is the coupon rate of this bond? The par coupon rate is %. (Round to two decimal places.)