| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 3721 |
15%
|
| 2 | Monthly | 2907 |
11.7%
|
| 3 | Yearly | 1847 |
7.5%
|
| 4 | Less often | 4380 |
17.7%
|
| 5 | Not at all | 11912 |
48.1%
|
| Sysmiss | 817 |