Regardless of that, in a paper entitled "The speed of Return on The whole lot, 1870-2015," researchers from the Federal Reserve Bank of San Francisco looked at the average rate of return for each main asset class in sixteen international economies. Their research dates back all of the technique to 1870. Nonetheless, for the purposes of conserving the info manageable, we decided to just look at the rates of returns within the United States from 1980 to 2015.