| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 921 |
3.7%
|
| 2 | Monthly | 1569 |
6.3%
|
| 3 | Yearly | 1120 |
4.5%
|
| 4 | Not all | 21435 |
85.6%
|
| Sysmiss | 69 |