| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1975 |
8%
|
| 2 | Monthly | 1066 |
4.3%
|
| 3 | Yearly | 1137 |
4.6%
|
| 4 | Less often | 2090 |
8.5%
|
| 5 | Not at all | 18382 |
74.6%
|
| Sysmiss | 510 |