| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 3461 |
14%
|
| 2 | Monthly | 3131 |
12.7%
|
| 3 | Yearly | 1830 |
7.4%
|
| 4 | Less often | 3627 |
14.7%
|
| 5 | Not at all | 12601 |
51.1%
|
| Sysmiss | 510 |