| Value | Category | Cases | |
|---|---|---|---|
| -2 | don't know | 0 |
0%
|
| -1 | refuse | 2 |
8%
|
| 0 | 3 |
12%
|
|
| 1 | 240-3000 | 8 |
32%
|
| 2 | 3001-16000 | 12 |
48%
|
| Sysmiss | 1024 |