| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 4376 |
17.5%
|
| 2 | Monthly | 2216 |
8.8%
|
| 3 | Yearly | 918 |
3.7%
|
| 4 | Not all | 17535 |
70%
|
| Sysmiss | 69 |