| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2866 |
11.9%
|
| 2 | Monthly | 3703 |
15.4%
|
| 3 | Yearly | 4151 |
17.2%
|
| 4 | Not all | 13377 |
55.5%
|
| Sysmiss | 392 |