| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 3013 |
12.3%
|
| 2 | Monthly | 1690 |
6.9%
|
| 3 | Yearly | 770 |
3.1%
|
| 4 | Less often | 3034 |
12.3%
|
| 5 | Not at all | 16085 |
65.4%
|
| Sysmiss | 516 |