| Valor | Categoría | Casos | |
|---|---|---|---|
| 15 | 2 |
6.3%
|
|
| 16 | 6 |
18.8%
|
|
| 17 | 14 |
43.8%
|
|
| 18 | 10 |
31.3%
|
|
| Sysmiss | 20478 |