| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2087 |
8.5%
|
| 2 | Monthly | 8135 |
33.1%
|
| 3 | Yearly | 2105 |
8.6%
|
| 4 | Less often | 4130 |
16.8%
|
| 5 | Not at all | 8135 |
33.1%
|
| Sysmiss | 516 |