| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 3373 |
13.5%
|
| 2 | Monthly | 2934 |
11.7%
|
| 3 | Yearly | 2548 |
10.2%
|
| 4 | Not all | 16190 |
64.6%
|
| Sysmiss | 69 |