| Value | Category | Cases | |
|---|---|---|---|
| 0 | 49 |
34%
|
|
| 15 | 4 |
2.8%
|
|
| 16 | 1 |
0.7%
|
|
| 17 | 14 |
9.7%
|
|
| 18 | 18 |
12.5%
|
|
| 19 | 24 |
16.7%
|
|
| 20 | 34 |
23.6%
|
|
| Sysmiss | 9 |