$($Solving for $i)$ In March $1963,$ Ironman was introduced in issue $39$ of the comic book Tales of Suspense. The original price for that issue was $$0\mathrm{.}15.$ By March $2013,50$ years later, the value of this

comic book, given the condition it's in$,$ had risen to $$10,000.$ What annual rate of interest would you have earned if you had bought the comic book in $1963$ and sold it in $2013?$

The annual rate of interest you would have earned if you had bought the comic book in $1963$ and sold it in $2013$ is

$\%.($Round to two decimal places.$)$