| Value | Category | 
|---|---|
| 1 | Professionals | 
| 2 | Senior Officials and Managers | 
| 3 | Office Clerks | 
| 4 | Commercial and Sales | 
| 5 | Skilled Service Sector | 
| 6 | Agricultural & Fishery Workers | 
| 7 | Semi-Skilled Operatives | 
| 8 | Drivers and Machine Operators | 
| 9 | Unskilled Labourers | 
| 100 | Inadequately Described or missing information | 
| Sysmiss |