| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
2.4%
|
| -8 | Refusal (spontaneous) | 2 |
1%
|
| 0 | No payments | 195 |
95.1%
|
| 20 | 2 |
1%
|
|
| 30 | 1 |
0.5%
|
|
| Sysmiss | 1458 |