Consider a the par yield curve for the U.S. Treasury securities given in the table below (only the first 3 years of the curve are provided). Calculate the missing spot rates indicated by ???? using bootstrapping and add them to the table. Show work for calculations.

Yield to Maturity (%) 5.25 5.50 5.75 6.00 6.25 6.50 Spot Rate (%) 5.25 5.50 PPP? 0.5 1.0 1.5 2.5 3.0 PPP