| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1187 |
4.7%
|
| 2 | Monthly | 913 |
3.6%
|
| 3 | Yearly | 1351 |
5.4%
|
| 4 | Not all | 21594 |
86.2%
|
| Sysmiss | 69 |