| Value | Category |
|---|---|
| -4 | Missing data |
| -3 | Refused to answer |
| -2 | Not applicable |
| -1 | Don't know |
| 1 | No income |
| 2 | R 1-R400 |
| 3 | R401-R800 |
| 4 | R801-R1 600 |
| 5 | R1 600-R 3 200 |
| 6 | R3 201-R6 400 |
| 7 | R6 401-R 12 800 |
| 8 | R12 801-R25 600 |
| 9 | R25 601-R51 200 |
| 10 | R 51 201-R102 400 |
| 11 | R102 401-204 800 |
| 12 | R204 801 or more |
| 13 | Response not given |