| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 497 |
2%
|
| 2 | Monthly | 2498 |
10.1%
|
| 3 | Yearly | 1298 |
5.3%
|
| 4 | Less often | 2677 |
10.9%
|
| 5 | Not at all | 17680 |
71.7%
|
| Sysmiss | 510 |