| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 752 |
3.1%
|
| 2 | Monthly | 1096 |
4.5%
|
| 3 | Yearly | 1935 |
7.9%
|
| 4 | Not all | 20805 |
84.6%
|
| Sysmiss | 582 |