| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 3 |
0.3%
|
| 2 | Monthly | 23 |
2.5%
|
| 3 | Yearly | 74 |
8%
|
| 4 | Not all | 828 |
89.2%
|
| Sysmiss | 71 |