| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2959 |
12.3%
|
| 2 | Monthly | 4347 |
18%
|
| 3 | Yearly | 2241 |
9.3%
|
| 4 | Not all | 14550 |
60.4%
|
| Sysmiss | 392 |