| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 708 |
2.8%
|
| 2 | Monthly | 2263 |
9%
|
| 3 | Yearly | 3189 |
12.7%
|
| 4 | Not all | 18885 |
75.4%
|
| Sysmiss | 69 |