| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2345 |
9.5%
|
| 2 | Monthly | 3770 |
15.3%
|
| 3 | Yearly | 1413 |
5.7%
|
| 4 | Less often | 3356 |
13.6%
|
| 5 | Not at all | 13766 |
55.8%
|
| Sysmiss | 510 |