Using Table 53 as your guide, what is your estimate of the expected annual HPR on the market index stock portfolio if the current risk- free interest rate is 4.8%? (Round your answer to 2 decimal places.) TABLE 5.3 Risk and return of investments in major asset classes, 1927-2016 T-bills T-bonds Stocks Arithmetic average Risk premium Standard deviation max min 3.42 NA 3.14 14.71 -0.02 5.51 2.08 8.14 38.07 -8.47 11.91 8.48 19.99 56.38 -43.73