| Value |
Category |
| 1 |
Primary one |
| 2 |
Primary two |
| 3 |
Primary three |
| 4 |
Primary four |
| 5 |
Primary five |
| 6 |
Primary six |
| 7 |
Primary seven |
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.