| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 9902 |
40.2%
|
| 2 | Monthly | 3265 |
13.2%
|
| 3 | Yearly | 1156 |
4.7%
|
| 4 | Less often | 2411 |
9.8%
|
| 5 | Not at all | 7916 |
32.1%
|
| Sysmiss | 510 |