| Value | Category | Cases | |
|---|---|---|---|
| 15 | 3 |
16.7%
|
|
| 16 | 5 |
27.8%
|
|
| 17 | 8 |
44.4%
|
|
| 18 | 2 |
11.1%
|
|
| Sysmiss | 382 |