| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 7699 |
32%
|
| 2 | Monthly | 4159 |
17.3%
|
| 3 | Yearly | 1606 |
6.7%
|
| 4 | Not all | 10633 |
44.1%
|
| Sysmiss | 392 |