| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 3407 |
13.9%
|
| 2 | Monthly | 3048 |
12.4%
|
| 3 | Yearly | 1974 |
8%
|
| 4 | Less often | 3767 |
15.3%
|
| 5 | Not at all | 12396 |
50.4%
|
| Sysmiss | 516 |