Numbers of current smokers, ex-smokers and ever smokers, and proportion of ever smokers who are ex-smokers, by age
| Age (years) | No | Current smokers | Ex-smokers | Ever smokers | Ex-smokers as % of total smokers |
| No (%) | No (%) | No (%) | |||
| 14–19 | 1144 | 12 (1.0) | 21 (1.8) | 33 (2.9) | 63.6 |
| 20–29 | 1686 | 41 (2.4) | 56 (3.3) | 97 (5.8) | 57.7 |
| 30–39 | 1277 | 54 (4.2) | 54 (4.2) | 108 (8.5) | 50.0 |
| 40–49 | 810 | 36 (4.4) | 53 (6.5) | 89 (11.0) | 59.6 |
| 50–59 | 554 | 35 (6.3) | 53 (9.6) | 88 (15.9) | 60.2 |
| 60–69 | 328 | 20 (6.1) | 39 (11.9) | 59 (18.0) | 66.1 |
| ⩾70 | 459 | 15 (3.3) | 58 (12.6) | 73 (15.9) | 79.5 |