| Value |
Category |
| 00 |
Ninguno |
| 01 |
Primero |
| 02 |
Segundo |
| 03 |
Tercero |
| 04 |
Cuarto |
| 05 |
Quinto |
| 06 |
Sexto |
| 07 |
Séptimo |
| 08 |
Octavo |
| 09 |
Noveno |
| 98 |
Educación especial |
| 99 |
Ns./Nr. |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.