| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every day | 21 |
0.2%
|
| 2 | More than once a week | 58 |
0.6%
|
| 3 | About once a week | 130 |
1.3%
|
| 4 | About once a month | 467 |
4.7%
|
| 5 | A few times a year | 578 |
5.9%
|
| 6 | Never | 8604 |
87.3%
|
| Sysmiss | 2 |