This horizontal bar graph is titled "Documents to Prove Identity and Address Amongst Youth (Over Time)." It compares the answers from the 2011 and 2008 federal elections in response to Question 26, "Which document did you use to prove your identity and address?" The answers are as follows:
Driver’s licence
Health card
Canadian passport or citizenship card
Voter information card
Utility bill
Birth certificate, social insurance card or old age security card