| Value | Category | Cases | |
|---|---|---|---|
| 5 | 1 |
7.7%
|
|
| 15 | 1 |
7.7%
|
|
| 20 | 4 |
30.8%
|
|
| 23 | 1 |
7.7%
|
|
| 99 | Refused | 6 |
46.2%
|
| Sysmiss | 4346 |