| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1 |
6.7%
|
|
| 2 | 1 |
6.7%
|
|
| 6 | 1 |
6.7%
|
|
| 7 | 1 |
6.7%
|
|
| 8 | 1 |
6.7%
|
|
| 9 | 1 |
6.7%
|
|
| 12 | 2 |
13.3%
|
|
| 16 | 2 |
13.3%
|
|
| 18 | 1 |
6.7%
|
|
| 20 | 2 |
13.3%
|
|
| 23 | 1 |
6.7%
|
|
| 30 | 1 |
6.7%
|
|
| Sysmiss | don't know | 0 | |
| Sysmiss | refusal | 0 |