| Value | Category |
|---|---|
| 1 | Parents support |
| 2 | Loans |
| 3 | Remittance from abroad |
| 4 | Proceeds from family farm |
| 5 | Proceeds from family non-farm enterprise |
| 6 | Income from family property |
| 7 | Association support |
| 8 | Church associations |
| 9 | Relatives and friends |
| 96 | |
| 99 | Other |
| Sysmiss |