Fill in the missing information in the following table. Assume that Portfolio $AB$ is $40$ percent invested in Stock $A.($A negative value should be indicated by a minus sign. Do not round intermediate calculations. Enter your answers as a percent rounded to $2$ decimal places.$)$

$\backslash$table$[[$Annual Returns on Stocks A and B$,,],[$Year$,$Stock A$,$Stock B$,$Portfolio AB$,,,],[2015,13\mathrm{.}0,\%,23\mathrm{.}0,\%,19\mathrm{.}00,\%$