"The report shows a stark difference in wages between college graduates and non-graduates. On average, the median full-time worker’s salary for a bachelor’s degree-holder stands at $45,500 a year, a two-year degree brings in $30,000, and a high school diploma alone only $28,000."
http://www.forbes.com/sites/jamesmarshallcrotty/2014/05/02/as-ranks-of-low-paid-college-educated-mal-employed-grows-to-36-pew-asks-is-college-worth-it/
http://www.pewsocialtrends.org/2014/02/11/the-rising-cost-of-not-going-to-college/