I'm not quite sure how to approach this question. Starting with the price of 106.9, I got a discount rate of over 1. I'm not sure if that's possible?

4. Use the August 15, 2020 U.S. Treasury quotes shown below to calculate the discount factor and spot rate for each maturity given in the table. Maturity Coupon Pricet Discount Factor Spot Ratet 2/15/21 3.625 101.71875 8/15/21 2.750 102.59375 2/15/22 2.500 103.46875 8/15/22 1.625 102.90625 2/15/23 1.375 103 8/15/23 2.500 106.90625 2/15/24 2.750 108.84375 8/15/24 2.375 108.46875 2/15/25 2.000 107.6875 8/15/25 2.000 108.375 Coupon and spot rate in %/year, price as percent of par