| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1956 |
8%
|
| 2 | Monthly | 7352 |
29.9%
|
| 3 | Yearly | 2942 |
12%
|
| 4 | Less often | 5067 |
20.6%
|
| 5 | Not at all | 7275 |
29.6%
|
| Sysmiss | 516 |