| Value | Category | Cases | |
|---|---|---|---|
| -3 | illegal missing | 0 |
0%
|
| -2 | dont know | 1 |
2%
|
| -1 | refuse | 2 |
3.9%
|
| 1 | Per year | 39 |
76.5%
|
| 2 | Per month | 9 |
17.6%
|
| 3 | For the whole amount | 0 |
0%
|
| Sysmiss | 974 |