| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 800 |
3.4%
|
| 2 | Monthly | 2909 |
12.2%
|
| 3 | Yearly | 5731 |
24.1%
|
| 4 | Not all | 14314 |
60.3%
|
| Sysmiss | 1058 |