| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1140 |
4.6%
|
| 2 | Monthly | 1727 |
6.9%
|
| 3 | Yearly | 1382 |
5.5%
|
| 4 | Not all | 20796 |
83%
|
| Sysmiss | 69 |