| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2575 |
10.5%
|
| 2 | Monthly | 5044 |
20.5%
|
| 3 | Yearly | 2749 |
11.2%
|
| 4 | Not all | 14220 |
57.8%
|
| Sysmiss | 582 |