15 Year Stock Market Returns

Through the end of September, these are the annual returns over various time frames for the S&P 500: 3 years +22.9% 7 years +16.2% 10 years +15.3% 15 years +15.7% 20 years +11.2% 30 years +10.3% 40 years +11.5% 50 years +11.9% The average annual return over the past 100 years or so is 10% per year. Everything from 20 years to 50 years are pretty close to the long-term average. But 15 years and down the returns are s...