Public Storage (NYSE:PSA) has outperformed the market over the past 20 years by 2.55% on an annualized basis producing an average annual return of 9.92%. Currently, Public Storage has a market capitalization of $52.51 billion. Buying $100 In PSA: If an investor had bought $100 of PSA stock 20 years ago, it would be worth $667.53 today based on a price of $298.61 for PSA at the time of writing. Public Storage’s Performance Over Last 20 YearsFinally — what’s the point of all this? The key insight to take from this article is to note how much of a difference compounded returns can make in your c…