In March​ 1963, Ironman was first introduced in issue number 39 of Tales of Suspense. The original price for that issue was 12 cents. By March of 2015​, 52 years​ later, the value of this comic book has risen to ​$11 comma 750. What annual rate of interest would you have earned if you had bought the comic in 1963 and sold it in 2015 ​(52 years​ later)?