| Value |
Category |
| 1 |
Daily |
| 2 |
Weekly |
| 3 |
Fortnightly |
| 4 |
Monthly |
| 5 |
Quarterly |
| 6 |
Half a yearly |
| 7 |
Yearly |
| 8 |
Occassionally |
| 9 |
Only when requested |
| 97 |
Never |
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.