While reading the selection, a student tries to underline the reasons for the increasing education pay gap described in the article. Look at the student's annotation for paragraphs 6 and 7: "It's not surprising that the pay gap based on education has widened over the decades as the economy has become more service-oriented and specialized, and as globalization and an erosion of unions have further held down wages especially for blue-collar workers, analysts say. For young adults in the mid-1960s, when a much smaller share went to college and manufacturing was a much bigger part of the labor force, college graduates earned $38,833 in 2012 dollars, but employed high school graduates weren't so far behind. They had a median income of $31,384, or 81% of those with bachelor's degrees. What these data show, then, is that the education pay gap has widened partly because the pay for college graduates has risen over the decades but even more so because the real earnings of the less educated have kept falling. The Millennial worker with only a high school diploma had a median income of $28,000 in 2012; that's down from $32,299 for comparably educated early Baby Boomers when they were young