| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 3874 |
15.6%
|
| 2 | Monthly | 1414 |
5.7%
|
| 3 | Yearly | 903 |
3.6%
|
| 4 | Less often | 2770 |
11.2%
|
| 5 | Not at all | 15806 |
63.8%
|
| Sysmiss | 817 |