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

Year	Stock A	Stock B
2022	8%	-3%
2021	12%	22%
2020	8%	20%
2019	4%	-12%

Stock A makes up 20% of the value of portfolio, and stock B makes up the rest. Calculate the portfolio return for each year. What was the average annual portfolio return over all years? Answer in 3+ decimals.