| Value | Category | Cases | |
|---|---|---|---|
| 6 | 2 |
13.3%
|
|
| 16 | 2 |
13.3%
|
|
| 17 | 2 |
13.3%
|
|
| 19 | 1 |
6.7%
|
|
| 20 | 3 |
20%
|
|
| 21 | 3 |
20%
|
|
| 23 | 1 |
6.7%
|
|
| 29 | 1 |
6.7%
|
|
| Sysmiss | don't know | 0 | |
| Sysmiss | refusal | 0 |