| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1117 |
4.6%
|
| 2 | Monthly | 1665 |
6.9%
|
| 3 | Yearly | 1377 |
5.7%
|
| 4 | Not all | 19938 |
82.7%
|
| Sysmiss | 392 |