| Value |
Category |
| 2 |
3 months ago |
| 3 |
Don't Know |
| 4 |
End of 2018 |
| 5 |
Half year ago |
| 6 |
Last month |
| 7 |
Only in early 2018 |
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.