| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2680 |
11.3%
|
| 2 | Monthly | 4671 |
19.7%
|
| 3 | Yearly | 2391 |
10.1%
|
| 4 | Not all | 14012 |
59%
|
| Sysmiss | 1058 |