| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every day | 38 |
0.4%
|
| 2 | More than once a week | 60 |
0.6%
|
| 3 | About once a week | 118 |
1.2%
|
| 4 | About once a month | 477 |
4.8%
|
| 5 | A few times a year | 652 |
6.6%
|
| 6 | Never | 8513 |
86.4%
|
| Sysmiss | 2 |