| Value | Category |
|---|---|
| 01 | None |
| 02 | On the job |
| 03 | Certifacate 1 or less than 2 years |
| 04 | Certifacate 2 or more years |
| 05 | Formal Apprenticeship |
| 06 | Informal Apprenticeship |
| 07 | Diploma 2 or more years |
| 08 | University |
| 09 | Other Courses after University |
| 10 | Other Courses |
| 99 | Not stated |