| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1238 |
5%
|
| 2 | Monthly | 2497 |
10.2%
|
| 3 | Yearly | 2139 |
8.7%
|
| 4 | Not all | 18714 |
76.1%
|
| Sysmiss | 582 |