| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every day | 22 |
0.2%
|
| 2 | More than once a week | 56 |
0.6%
|
| 3 | About once a week | 102 |
1%
|
| 4 | About once a month | 396 |
4%
|
| 5 | A few times a year | 421 |
4.3%
|
| 6 | Never | 8861 |
89.9%
|
| Sysmiss | 2 |