I want to test the ability of students to read a passage and answer questions about it. Could you please come up with a good question for the passage "As of 2000[update], children and teenagers (0–19 years old) make up 15.1% of the population, while adults (20–64 years old) make up 65% and seniors (over 64 years old) make up 19.9%."? 

How old was the minority of the population?