| Value | Category | Cases | |
|---|---|---|---|
| 2 | semanal | 1 |
0.3%
|
| 4 | mensual | 2 |
0.6%
|
| 5 | semestral | 156 |
45.9%
|
| 6 | anual | 181 |
53.2%
|
| Sysmiss | 405 |