| Value | Category | Cases | |
|---|---|---|---|
| -2 | Refusal to answer | 0 |
0%
|
| -1 | Don't know | 0 |
0%
|
| 60 | 1 |
50%
|
|
| 500 | 1 |
50%
|
|
| Sysmiss | 2631 |