| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1107 |
4.4%
|
| 2 | Monthly | 1202 |
4.8%
|
| 3 | Yearly | 930 |
3.7%
|
| 4 | Not all | 21806 |
87.1%
|
| Sysmiss | 69 |