| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2723 |
11.5%
|
| 2 | Monthly | 5997 |
25.2%
|
| 3 | Yearly | 8382 |
35.3%
|
| 4 | Not all | 6652 |
28%
|
| Sysmiss | 1058 |