(Bloomberg Business) -- Mountains of student debt, flattening wages, and a tough job market have made many people question whether ever-pricey college degrees still lead to good jobs. The answer is yes: Job opportunities for college-educated workers have never been greater, according to a new report.

The report, published Monday by Georgetown University's Center on Education & the Workforce, found that from 1967 to 2007, the share of high-skill management and professional jobs rose 14 percent and that those jobs represent 35 percent of all U.S. jobs. The results belie one widely held belief about the economy: that over the last four decades, lucrative jobs have disappeared and been replaced by high numbers of low-skill, low- wage service jobs. In fact, over the same period, opportunities for low-skill workers declined 10 percent. These low-skill labor roles, such as fast-food server, retail worker, and dishwasher, now make up only 29 percent of jobs.

To arrive at their conclusions, Georgetown's Anthony Carnevale and Stephen Rose examined data from the U.S. Census Bureau showing hourly earnings from 1973 to 2007. The numbers show that, contrary to the pessimistic views of some, college- educated workers are in significantly more demand today than they were a couple decades ago.