See Board of Governors of the Federal Reserve System (2016), Report on the Economic Well-Being of U.S Households in 2015 (Washington: Board of Governors, May), https://www.federalreserve.gov/2015-report-economic-well-being-us-households-201605.pdf.
15 See Brad Hershbein and Melissa S. Kearney (2014), Major Decisions: What Graduates Earn over Their Lifetimes, Hamilton Project (Washington: Brookings Institution), figure 2, http://www.hamiltonproject.org/papers/major_decisions_what_graduates_earn_over_their_lifetimes; and Anthony P. Carnevale, Ban Cheah, and Andrew R Hanson (2015), The Economic Value of College Majors (Washington: Georgetown University Center on Education and the Workforce), https://cew.georgetown.edu/wp-content/uploads/The-Economic-Value-of-College-Majors-Full-Reportweb-FINAL.pdf.