| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2887 |
11.7%
|
| 2 | Monthly | 2914 |
11.8%
|
| 3 | Yearly | 1379 |
5.6%
|
| 4 | Less often | 3564 |
14.5%
|
| 5 | Not at all | 13848 |
56.3%
|
| Sysmiss | 516 |