Employment opportunities for teens and people in their early 20s have plummeted in recent years, according to a new study by the Brookings Institution. CNNMoney reports that 26 percent of teens ages 16 to 19 had a job in 2011, down from 45 percent in 2000. That's the lowest rate on record since World War II. College-aged adults also experienced a decline in job opportunities, the article said. Back in 2000, 72 percent of 20- to 24-year-olds were employed, but that rate declined to 61 percent in 2011.