Consider the following spot interest rates for maturities of one, two, three, and four years. r1 = 4.5% r2 = 4.9%* r3 = 5.6% r4 = 6.4% Assuming a constant real interest rate of 2 percent, what are the approximate expected inflation rates for the next four years? Note: Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places. 11 % 12 % 13 % 14 %