| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1024 |
4.3%
|
| 2 | Monthly | 1410 |
5.9%
|
| 3 | Yearly | 1917 |
8.1%
|
| 4 | Not all | 19403 |
81.7%
|
| Sysmiss | 1058 |