| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 4112 |
16.7%
|
| 2 | Monthly | 981 |
4%
|
| 3 | Yearly | 1070 |
4.3%
|
| 4 | Not all | 18463 |
75%
|
| Sysmiss | 534 |