| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1932 |
7.9%
|
| 2 | Monthly | 3819 |
15.5%
|
| 3 | Yearly | 4889 |
19.9%
|
| 4 | Not all | 13948 |
56.7%
|
| Sysmiss | 582 |