| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2131 |
8.6%
|
| 2 | Monthly | 9116 |
37%
|
| 3 | Yearly | 2143 |
8.7%
|
| 4 | Less often | 4394 |
17.8%
|
| 5 | Not at all | 6866 |
27.9%
|
| Sysmiss | 510 |