| Value |
Category |
| 1 |
Monthly |
| 2 |
Less than once a month, at least once per year |
| 3 |
Less than once per year |
| 4 |
Never |
| 7 |
Do not know / Not sure |
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.