| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 745 |
3.2%
|
| 2 | Monthly | 2361 |
10.1%
|
| 3 | Yearly | 5100 |
21.9%
|
| 4 | Not all | 15128 |
64.8%
|
| Sysmiss | 1073 |