There is a $27\mathrm{.}30\%$ probability of an average economy and a $72\mathrm{.}70\%$ probability of an above average economy. You invest $13\mathrm{.}70\%$ of your money in Stock S and $86\mathrm{.}30\%$ of your money in Stock T$.$ In an average economy the expected returns for Stock S and Stock T are $13\mathrm{.}40\%$ and $11\mathrm{.}00\%,$ respectively. In an above average economy the the expected returns for Stock S and T are $18\mathrm{.}50\%$ and $33\mathrm{.}40\%,$ respectively. What is the expected return for this two stock portfolio?