Teens data is from from a survey we conducted between June 26 and September 24, 2009 of 800 adolescents between ages 12 and 17. Adult numbers are drawn from a survey we conducted between April 29 and May 30, 2010, among a sample of 2,252 adults ages 18 and older, including 744 reached on a cell phone. For more information about internet adoption trends over time, please see our Trend Data.