| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 3158 |
12.8%
|
| 2 | Monthly | 5505 |
22.4%
|
| 3 | Yearly | 2017 |
8.2%
|
| 4 | Not all | 13908 |
56.6%
|
| Sysmiss | 582 |