| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 528 |
2.1%
|
| 2 | Monthly | 1531 |
6.2%
|
| 3 | Yearly | 5750 |
23.3%
|
| 4 | Less often | 10918 |
44.3%
|
| 5 | Not at all | 5923 |
24%
|
| Sysmiss | 510 |