A Federal Reserve Bank of New York study released Tuesday suggests that a U.S. college degree is still worth the investment, Bloomberg reported. The benefits of both bachelor's and associate's degrees still outweigh the costs for the average person, the study said. The study was completed by an analysis of economic returns since the 1970s. The return to a college degree has held steady for more than a decade at around 15 percent, economists Jaison R. Abel and Richard Deitz wrote in the study, "easily surpassing the threshold for a sound investment." Field of study plays an important role, as engineering majors or math and computer science majors earn the highest returns at 21 percent and 18 percent, respectively. But every major earned a return of investment of more than 9 percent.