| Value | Category | Cases | |
|---|---|---|---|
| 0 | 23 |
3.9%
|
|
| 20 | 51 |
8.6%
|
|
| 40 | 70 |
11.7%
|
|
| 60 | 146 |
24.5%
|
|
| 80 | 167 |
28%
|
|
| 100 | 139 |
23.3%
|
|
| Sysmiss | 546 |