| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 7026 |
28.1%
|
| 2 | Monthly | 2098 |
8.4%
|
| 3 | Yearly | 568 |
2.3%
|
| 4 | Not all | 15353 |
61.3%
|
| Sysmiss | 69 |