| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1139 |
4.6%
|
| 2 | Monthly | 8389 |
34%
|
| 3 | Yearly | 1872 |
7.6%
|
| 4 | Less often | 2693 |
10.9%
|
| 5 | Not at all | 10557 |
42.8%
|
| Sysmiss | 510 |