You have a portfolio with an asset allocation of $50$ percent stocks, $32$ percent long$-$term Treasury bonds, and $18$ percent T$-$bills. Use these weights and the returns given in the above table to compute the return of the portfolio in the year $2010$ and each year since. Then compute the average annual return and standard deviation of the portfolio.

Note: Do not round intermediate calculations. Round your answers to $2$ decimal places.