| Valor | Categoría | Casos | |
|---|---|---|---|
| 15 | 2 |
5.9%
|
|
| 16 | 9 |
26.5%
|
|
| 17 | 12 |
35.3%
|
|
| 18 | 11 |
32.4%
|
|
| Sysmiss | 20476 |