| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 8621 |
35.1%
|
| 2 | Monthly | 4811 |
19.6%
|
| 3 | Yearly | 1569 |
6.4%
|
| 4 | Not all | 9587 |
39%
|
| Sysmiss | 582 |