| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 367 |
1.5%
|
| 2 | Monthly | 811 |
3.4%
|
| 3 | Yearly | 2079 |
8.8%
|
| 4 | Not all | 20497 |
86.3%
|
| Sysmiss | 1058 |