| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 410 |
1.7%
|
| 2 | Monthly | 1721 |
6.9%
|
| 3 | Yearly | 2432 |
9.8%
|
| 4 | Less often | 3284 |
13.3%
|
| 5 | Not at all | 16920 |
68.3%
|
| Sysmiss | 817 |