| Value | Category | Cases | |
|---|---|---|---|
| 1 | Everyday | 6 |
0%
|
| 2 | Once a week | 12 |
0%
|
| 3 | Once a month | 1152 |
3.3%
|
| 4 | Once a term | 3493 |
9.9%
|
| 5 | Once a year | 2827 |
8%
|
| 6 | Unspecified | 85 |
0.2%
|
| 95 | Missing | 12 |
0%
|
| 98 | Don't know | 13 |
0%
|
| 99 | NA | 27589 |
78.4%
|