| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2085 |
8.3%
|
| 2 | Monthly | 1363 |
5.4%
|
| 3 | Yearly | 1371 |
5.5%
|
| 4 | Not all | 20226 |
80.8%
|
| Sysmiss | 69 |