| Value | Category | Cases | |
|---|---|---|---|
| 50 | 5 |
16.7%
|
|
| 60 | 10 |
33.3%
|
|
| 70 | 13 |
43.3%
|
|
| 80 | 1 |
3.3%
|
|
| 100 | 1 |
3.3%
|
|
| Sysmiss | 31 |