| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 8 |
0.9%
|
| 2 | Monthly | 52 |
5.6%
|
| 3 | Yearly | 180 |
19.4%
|
| 4 | Not all | 688 |
74.1%
|
| Sysmiss | 71 |