| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11-15 | 20 |
23.3%
|
| 2 | 16-20 | 53 |
61.6%
|
| 3 | 21-25 | 11 |
12.8%
|
| 4 | 26-30 | 2 |
2.3%
|
| 5 | more than 30 | 0 |
0%
|
| Sysmiss | 46 |