| 2 to 7 days ago: 821 (24.3%) |  |
| 2 to 4 weeks ago: 701 (20.8%) | |
| 1 to 3 months ago: 511 (15.1%) | |
| Yesterday: 493 (14.6%) | |
| Today!: 288 (8.5%) | |
| 4 to 6 months ago: 189 (5.6%) | |
| 6 to 12 months ago: 149 (4.4%) | |
| 1 to 3 years ago: 128 (3.8%) | |
| Over 3 years ago, but after I got my drivers' licence: 61 (1.8%) | |
| Not since I got my drivers' licence, over 3 years ago: 13 (0.4%) | |
| Over 3 years ago, but I don't have a drivers' licence: 13 (0.4%) | |
| I've never ridden in the back seat of a car: 9 (0.3%) | |
