| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1904 |
8.2%
|
| 2 | Monthly | 1179 |
5.1%
|
| 3 | Yearly | 1123 |
4.8%
|
| 4 | Not all | 19128 |
82%
|
| Sysmiss | 1073 |