| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 8570 |
36.1%
|
| 2 | Monthly | 5648 |
23.8%
|
| 3 | Yearly | 1438 |
6.1%
|
| 4 | Not all | 8098 |
34.1%
|
| Sysmiss | 1058 |