| Value | Category | Cases | |
|---|---|---|---|
| 1 | Everyday | 26 |
0.1%
|
| 2 | Once a week | 58 |
0.2%
|
| 3 | Once a month | 1047 |
3%
|
| 4 | Once a term | 2098 |
6%
|
| 5 | Once a year | 1630 |
4.6%
|
| 6 | Unspecified | 185 |
0.5%
|
| 95 | Missing | 23 |
0.1%
|
| 98 | Don't know | 17 |
0%
|
| 99 | NA | 30105 |
85.6%
|