| Value | Category | Cases | |
|---|---|---|---|
| 30 | 1 |
20%
|
|
| 50 | 1 |
20%
|
|
| 77 | refused | 0 |
0%
|
| 88 | don't know | 0 |
0%
|
| 99 | missing | 0 |
0%
|
| 160 | 1 |
20%
|
|
| 320 | 1 |
20%
|
|
| 900 | 1 |
20%
|
|
| Sysmiss | 4965 |