| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 683 |
2.8%
|
| 2 | Monthly | 1875 |
7.6%
|
| 3 | Yearly | 5270 |
21.4%
|
| 4 | Less often | 5420 |
22%
|
| 5 | Not at all | 11344 |
46.1%
|
| Sysmiss | 516 |