| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1879 |
7.6%
|
| 2 | Monthly | 4667 |
19%
|
| 3 | Yearly | 1109 |
4.5%
|
| 4 | Less often | 3208 |
13%
|
| 5 | Not at all | 13729 |
55.8%
|
| Sysmiss | 516 |