| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1757 |
7.4%
|
| 2 | Monthly | 2375 |
10%
|
| 3 | Yearly | 1931 |
8.1%
|
| 4 | Not all | 17691 |
74.5%
|
| Sysmiss | 1058 |