| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 568 |
2.3%
|
| 2 | Monthly | 2670 |
10.9%
|
| 3 | Yearly | 4131 |
16.8%
|
| 4 | Not all | 17219 |
70%
|
| Sysmiss | 582 |