| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every day | 19 |
0.2%
|
| 2 | More than once a week | 61 |
0.6%
|
| 3 | About once a week | 122 |
1.2%
|
| 4 | About once a month | 386 |
3.9%
|
| 5 | A few times a year | 375 |
3.8%
|
| 6 | Never | 8895 |
90.2%
|
| Sysmiss | 2 |