| Value | Category |
|---|---|
| 00 | Farmers, farmers relatives and farm managers |
| 01 | Other agricultural occupations and fishermen |
| 02 | Higher professional |
| 03 | Lower professional |
| 04 | Employers and managers |
| 05 | Salaried employees |
| 06 | Intermediate non-manual workers |
| 07 | Other non-manual workers |
| 08 | Skilled manual workers |
| 09 | Semi-skilled manual workers |
| 10 | Unskilled manual workers |
| 98 | Unknown |