| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 8831 |
35.9%
|
| 2 | Monthly | 4918 |
20%
|
| 3 | Yearly | 1756 |
7.1%
|
| 4 | Not all | 9121 |
37%
|
| Sysmiss | 534 |