| Value | Category | Cases | |
|---|---|---|---|
| 15 | 8 |
47.1%
|
|
| 20 | 4 |
23.5%
|
|
| 25 | 4 |
23.5%
|
|
| 30 | 1 |
5.9%
|
|
| Sysmiss | 2 |