| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1435 |
6%
|
| 2 | Monthly | 2555 |
10.6%
|
| 3 | Yearly | 1693 |
7%
|
| 4 | Not all | 18414 |
76.4%
|
| Sysmiss | 392 |