Bourdon Software has $5\mathrm{.}2$ percent coupon bonds on the market with $19$ years to maturity. The bonds make semiannual payments and currently sell for $104$ percent of par.

What is the effective annual yield?

$($Enter your answer as a percentage, omit the $"\%"$ sign in your response, and enter your answer with two decimal places. For example, $1\mathrm{.}214\%$ should be entered as $1\mathrm{.}21.)$