| Value | Category |
|---|---|
| 1 | Less than one monthly income |
| 2 | From 1 to 2 monthly incomes |
| 3 | From 2 to 3 monthly incomes |
| 4 | From 3 to 6 monthly incomes |
| 5 | From 6 to 12 monthly incomes |
| 6 | More than yearly income |
| 98 | I find it difficult to answer this question |
| 99 | No answer |
| Sysmiss |