| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1024 |
4.2%
|
| 2 | Monthly | 8621 |
35.8%
|
| 3 | Yearly | 2277 |
9.4%
|
| 4 | Not all | 12175 |
50.5%
|
| Sysmiss | 392 |