| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1634 |
6.6%
|
| 2 | Monthly | 4092 |
16.5%
|
| 3 | Yearly | 1015 |
4.1%
|
| 4 | Less often | 3449 |
13.9%
|
| 5 | Not at all | 14577 |
58.9%
|
| Sysmiss | 817 |