| Value | Category | Cases | |
|---|---|---|---|
| 15 | 6 |
21.4%
|
|
| 20 | 11 |
39.3%
|
|
| 25 | 1 |
3.6%
|
|
| 30 | 5 |
17.9%
|
|
| 40 | 5 |
17.9%
|
|
| Sysmiss | 612 |