| Value |
Category |
| 1 |
None |
| 2 |
Primary |
| 3 |
preparatory |
| 4 |
intermediate |
| 5 |
above intermediate |
| 6 |
university |
| 7 |
higher than university |
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.
