| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 3037 |
12.1%
|
| 2 | Monthly | 4535 |
18.1%
|
| 3 | Yearly | 2345 |
9.4%
|
| 4 | Not all | 15128 |
60.4%
|
| Sysmiss | 69 |