| Value | Category | Cases | |
|---|---|---|---|
| -2 | don't know | 0 |
0%
|
| -1 | refuse | 0 |
0%
|
| 0 | 2 |
40%
|
|
| 2500 | 1 |
20%
|
|
| 6400 | 1 |
20%
|
|
| 13500 | 1 |
20%
|
|
| Sysmiss | 1044 |