| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 3458 |
13.8%
|
| 2 | Monthly | 2902 |
11.6%
|
| 3 | Yearly | 1982 |
7.9%
|
| 4 | Not all | 16703 |
66.7%
|
| Sysmiss | 69 |