courtesy of Tulane Public Relations Key Points The S&P 500 delivered an average annual gain of 5.7% above inflation over the past two decades. $5,000 invested at 5% annual interest grows to $21,609.71 over 30 years without additional deposits. Daily $7 coffee purchases total $2,520 annually or $100,800 over 40 years. If you’re thinking about retiring or know someone who is, there are three quick questions causing many Americans to realize they can retire earlier than expected. take 5 minutes to le ...