| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1933 |
8.3%
|
| 2 | Monthly | 2463 |
10.6%
|
| 3 | Yearly | 1852 |
7.9%
|
| 4 | Not all | 17086 |
73.2%
|
| Sysmiss | 1073 |