| Value | Category | Cases | |
|---|---|---|---|
| -2 | don't know | 0 |
0%
|
| -1 | refuse | 2 |
8%
|
| 0 | 5 |
20%
|
|
| 1 | 2.5-12 | 5 |
20%
|
| 2 | 13-1500 | 13 |
52%
|
| Sysmiss | 1024 |