| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2113 |
8.6%
|
| 2 | Monthly | 1449 |
5.9%
|
| 3 | Yearly | 938 |
3.8%
|
| 4 | Less often | 2161 |
8.8%
|
| 5 | Not at all | 17989 |
73%
|
| Sysmiss | 510 |