The table below shows the historical rates of return $($including dividends$)$ for two stocks:

Year, Stock A$,$ Stock B

$2022,3\%,-3\%$

$2021,12\%,23\%$

$2020,8\%,20\%$

$2019,4\%,-12\%$

Stock A makes up $40\%$ of the value of portfolio, and stock B makes up the rest. Calculate the portfolio return for each year.

What was the portfolio return in $2022?$

What was the portfolio return in $2021?$

What was the average annual portfolio return over all years?

What was the standard deviation of annual portfolio returns?