| Value | Category | Cases | |
|---|---|---|---|
| 0 | 58 |
2.2%
|
|
| 5 | 279 |
10.7%
|
|
| 10 | 317 |
12.1%
|
|
| 15 | 685 |
26.2%
|
|
| 20 | 708 |
27.1%
|
|
| 25 | 566 |
21.7%
|
|
| Sysmiss | 13957 |