| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 8797 |
37.7%
|
| 2 | Monthly | 3141 |
13.5%
|
| 3 | Yearly | 1242 |
5.3%
|
| 4 | Not all | 10154 |
43.5%
|
| Sysmiss | 1073 |