| Value | Category | Cases | |
|---|---|---|---|
| 29 | 13 |
5.7%
|
|
| 30 | 49 |
21.3%
|
|
| 31 | 38 |
16.5%
|
|
| 32 | 61 |
26.5%
|
|
| 33 | 39 |
17%
|
|
| 34 | 30 |
13%
|
|
| Sysmiss | 81 |