| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2223 |
9%
|
| 2 | Monthly | 3711 |
15.1%
|
| 3 | Yearly | 1591 |
6.5%
|
| 4 | Less often | 3913 |
15.9%
|
| 5 | Not at all | 13154 |
53.5%
|
| Sysmiss | 516 |