Background: 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%.
Question: What percent of the population are over 64 years old?
Answer:<extra_id_0>.
<extra_id_0> 19.9%<extra_id_1>