Bob has been investing $$3,250$ in stock at the end of every year for the past $13$ years. If the account is currently worth $$83,680,$ what was his annual return on this investment?

Multiple Choice

$10\mathrm{.}20\%$

$10\mathrm{.}73\%$

$12\mathrm{.}27\%$

$9\mathrm{.}91\%$

$11\mathrm{.}93\%$