| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 497 |
2%
|
| 2 | Monthly | 4738 |
19.1%
|
| 3 | Yearly | 5913 |
23.9%
|
| 4 | Less often | 7625 |
30.8%
|
| 5 | Not at all | 5994 |
24.2%
|
| Sysmiss | 817 |