| Smoking habits 1986–1996 % | Unchanged smoking habits 1986–1996 % |
Persistent nonsmokers | Persistent ex-smokers | Persistent smokers | Starters | Re-starters | Quitters | Unclear |
Manual workers in industry | 32 | 29 | 21 | 0.4 | 1.9 | 14 | 1.2 | 82 |
Manual workers in service | 42 | 22 | 22 | 0.5 | 1.7 | 11 | 2.0 | 86 |
Assistant non-manual employees | 39 | 25 | 22 | 0.4 | 2.0 | 13 | 0.5 | 86 |
Professionals | 40 | 29 | 17 | 0.6 | 1.6 | 11 | 1.1 | 86 |
Housewives | 53 | 16 | 18 | 0 | 1.5 | 8.2 | 4.6 | 87 |
Self-employed | 41 | 26 | 19 | 1.5 | 0 | 11 | 1.5 | 86 |
Unknown | 50 | 21 | 11 | 0.4 | 0.6 | 7.6 | 9.9 | 82 |
Total | 40 | 25 | 19 | 0.5 | 1.6 | 11 | 2.4 | 84 |