Annual and Average Returns for Stocks, Bonds, and T$-$Bills, $1950$ to $2019$

Stocks Long$-$Term Treasury Bonds T$-$bills

$1950$ to $2019$ Average $12\mathrm{.}7\%6\mathrm{.}6\%4\mathrm{.}2\%$

$1950$ to $1959$ Average $20\mathrm{.}90\mathrm{.}02\mathrm{.}0$

$1960$ to $1969$ Average $8\mathrm{.}71\mathrm{.}64\mathrm{.}0$

$1970$ to $1979$ Average $7\mathrm{.}55\mathrm{.}76\mathrm{.}3$

$1980$ to $1989$ Average $18\mathrm{.}213\mathrm{.}58\mathrm{.}9$

$1990$ to $1999$ Average $19\mathrm{.}09\mathrm{.}54\mathrm{.}9$

$2000$ to $2009$ Average $0\mathrm{.}98\mathrm{.}02\mathrm{.}7$

$2010$ Annual Return $15\mathrm{.}19\mathrm{.}40\mathrm{.}01$

$2011$ Annual Return $2\mathrm{.}129\mathrm{.}90\mathrm{.}02$

$2012$ Annual Return $16\mathrm{.}03\mathrm{.}60\mathrm{.}02$

$2013$ Annual Return $32\mathrm{.}412\mathrm{.}70\mathrm{.}07$

$2014$ Annual Return $13\mathrm{.}725\mathrm{.}10\mathrm{.}05$

$2015$ Annual Return $1\mathrm{.}41\mathrm{.}20\mathrm{.}21$

$2016$ Annual Return $12\mathrm{.}01\mathrm{.}20\mathrm{.}51$

$2017$ Annual Return $21\mathrm{.}88\mathrm{.}41\mathrm{.}39$

$2018$ Annual Return $-4\mathrm{.}4-1\mathrm{.}81\mathrm{.}94$

$2019$ Annual Return $31\mathrm{.}514\mathrm{.}82\mathrm{.}06$

$2010$ to $2019$ Average $14\mathrm{.}27\mathrm{.}70\mathrm{.}63$

You have a portfolio with an asset allocation of $50$ percent stocks, $34$ percent long$-$term Treasury bonds, and $16$ 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.