| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1280 |
5.1%
|
| 2 | Monthly | 966 |
3.9%
|
| 3 | Yearly | 1635 |
6.5%
|
| 4 | Not all | 21164 |
84.5%
|
| Sysmiss | 69 |