| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 730 |
3.1%
|
| 2 | Monthly | 2042 |
8.6%
|
| 3 | Yearly | 3260 |
13.7%
|
| 4 | Not all | 17722 |
74.6%
|
| Sysmiss | 1058 |