| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 446 |
1.8%
|
| 2 | Monthly | 2087 |
8.5%
|
| 3 | Yearly | 1144 |
4.6%
|
| 4 | Less often | 1720 |
7%
|
| 5 | Not at all | 19253 |
78.1%
|
| Sysmiss | 510 |