Last year was a phenomenal year for bank stocks, with Bank of America(BAC 0.41%) in particular having doubled over the course of the year. But was the performance indicative of how these banks are doing on a longer timeline? In the following video, Motley Fool financials analysts Matt Koppenheffer and David Hanson take a look at the performances of several of the big banks over the past 15 years to get a better look at which bank really is the strongest investment today.