| Value |
Category |
| 1 |
Cada día |
| 2 |
Cada semana |
| 3 |
Cada mes |
| 4 |
Cada año |
| 6 |
Nunca, siempre tienen combustible |
| 51 |
NO HAY UN PERIODO |
| 52 |
CADA SEIS MESES |
| Sysmiss |
|
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.