| Value | Category | Cases | |
|---|---|---|---|
| 0 | 454 |
3%
|
|
| 5 | 1215 |
8%
|
|
| 10 | 2138 |
14.2%
|
|
| 15 | 4201 |
27.8%
|
|
| 20 | 3985 |
26.4%
|
|
| 25 | 3116 |
20.6%
|
|
| Sysmiss | 533 |