| Value | Category | Cases | |
|---|---|---|---|
| 0 | 275 |
28.9%
|
|
| 5 | 268 |
28.2%
|
|
| 10 | 264 |
27.8%
|
|
| 15 | 119 |
12.5%
|
|
| 20 | 25 |
2.6%
|
|
| Sysmiss | 612 |