| Value |
Category |
| 1 |
Never |
| 2 |
Once a year or less |
| 3 |
Once in 6 months |
| 4 |
Once in 3 months |
| 5 |
Every month |
| 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.