| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 7512 |
30.5%
|
| 2 | Monthly | 4137 |
16.8%
|
| 3 | Yearly | 1400 |
5.7%
|
| 4 | Less often | 3034 |
12.3%
|
| 5 | Not at all | 8509 |
34.6%
|
| Sysmiss | 516 |