| Value | Category | Cases | |
|---|---|---|---|
| 15 | 6 |
23.1%
|
|
| 16 | 2 |
7.7%
|
|
| 17 | 2 |
7.7%
|
|
| 18 | 10 |
38.5%
|
|
| 19 | 3 |
11.5%
|
|
| 20 | 3 |
11.5%
|
|
| Sysmiss | 9531 |