| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 4720 |
19.2%
|
| 2 | Monthly | 3904 |
15.9%
|
| 3 | Yearly | 2185 |
8.9%
|
| 4 | Not all | 13779 |
56%
|
| Sysmiss | 582 |