| Value | Category | Cases | |
|---|---|---|---|
| 30 | 6 |
10.7%
|
|
| 50 | 16 |
28.6%
|
|
| 60 | 17 |
30.4%
|
|
| 70 | 8 |
14.3%
|
|
| 80 | 9 |
16.1%
|
|
| Sysmiss | 63 |