| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 4016 |
16.3%
|
| 2 | Monthly | 3046 |
12.4%
|
| 3 | Yearly | 1553 |
6.3%
|
| 4 | Less often | 3150 |
12.8%
|
| 5 | Not at all | 12827 |
52.2%
|
| Sysmiss | 516 |