| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2866 |
11.7%
|
| 2 | Monthly | 3507 |
14.3%
|
| 3 | Yearly | 1960 |
8%
|
| 4 | Not all | 16255 |
66.1%
|
| Sysmiss | 582 |