| Value | Category | Cases | |
|---|---|---|---|
| 30 | 10 |
30.3%
|
|
| 35 | 5 |
15.2%
|
|
| 40 | 13 |
39.4%
|
|
| 50 | 3 |
9.1%
|
|
| 60 | 2 |
6.1%
|
|
| Sysmiss | 28 |