| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1001 |
4.1%
|
| 2 | Monthly | 1494 |
6.1%
|
| 3 | Yearly | 1063 |
4.3%
|
| 4 | Less often | 2793 |
11.3%
|
| 5 | Not at all | 18299 |
74.2%
|
| Sysmiss | 510 |