| Value | Category | Cases | |
|---|---|---|---|
| 0 | 17 |
11.8%
|
|
| 15 | 18 |
12.5%
|
|
| 16 | 2 |
1.4%
|
|
| 17 | 26 |
18.1%
|
|
| 18 | 61 |
42.4%
|
|
| 19 | 18 |
12.5%
|
|
| 20 | 2 |
1.4%
|
|
| Sysmiss | 9 |