| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 0 |
0%
|
| -8 | Refusal | 0 |
0%
|
| -7 | Does not apply | 0 |
0%
|
| 50000000 | 1 |
50%
|
|
| 120000000 | 1 |
50%
|
|
| Sysmiss | 1993 |