| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 902 |
3.6%
|
| 2 | Monthly | 1718 |
6.9%
|
| 3 | Yearly | 1987 |
8%
|
| 4 | Less often | 3396 |
13.7%
|
| 5 | Not at all | 16764 |
67.7%
|
| Sysmiss | 817 |