The master’s degree is the fastest-growing college credential in the United States, Vox reports. “More than 16 million people in the U.S. — about 8 percent of the population — now have a master’s, a 43 percent increase since 2002.” In a series of graphs, Vox shows how different fields have grown or sunk in popularity in the four decades since 1971. While education once was the higher degree most graduate students pursue in the 1970s, business has now surpassed it. And health professions have jumped from 2.3 percent of master degree students in 1971 to 11.1 percent in 2012. Also, computer science, which has climbed in popularity, while theology and history have lost ground.