| Value |
Category |
| 2 |
level 2 |
| 3 |
level 3 |
| 4 |
level 4 |
| 5 |
level 5 |
| 6 |
level 6 |
| 7 |
level 7 |
| 8 |
level 8 |
| 99 |
don't know |
| 999 |
not applicable |
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.