Lou Gehrig was major league baseball's MVP in $1927.$ His annual salary that year was $$8,000.$ The MVP for $2016$ was Mike Trout, earning $$15,250,000$ per year. What is the annual rate of salary appreciation over those years? Enter your answer as a full percentage number. For example, if your answer is $12\mathrm{.}33\%$ you must enter $12\mathrm{.}33$ only. Do not enter the $"\%"$ sign.