| Value |
Category |
| 98 |
no sabe/no recuerda |
| 99 |
no responde |
| 1972 |
|
| 1975 |
|
| 1976 |
|
| 1981 |
|
| 1982 |
|
| 1984 |
|
| 1986 |
|
| 1987 |
|
| 1989 |
|
| 1990 |
|
| 1991 |
|
| 9998 |
|
| 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.