| Value | Category | Cases | |
|---|---|---|---|
| 21 | 12 |
6.7%
|
|
| 22 | 15 |
8.4%
|
|
| 23 | 91 |
50.8%
|
|
| 24 | 61 |
34.1%
|
|
| Sysmiss | 820 |