| Value | Category | Cases | |
|---|---|---|---|
| 13 | 3 |
3.2%
|
|
| 14 | 23 |
24.5%
|
|
| 15 | 32 |
34%
|
|
| 16 | 19 |
20.2%
|
|
| 17 | 12 |
12.8%
|
|
| 18 | 1 |
1.1%
|
|
| 19 | 3 |
3.2%
|
|
| 21 | 1 |
1.1%
|
|
| Sysmiss | 8 |