| Value |
Category |
| 1 |
1. More than 6 years ago |
| 2 |
2. Between 3 and 6 years |
| 3 |
3. Less than 3 years ago |
| 9 |
9. Don t know |
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.