| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2243 |
9.1%
|
| 2 | Monthly | 1357 |
5.5%
|
| 3 | Yearly | 1653 |
6.7%
|
| 4 | Not all | 19335 |
78.6%
|
| Sysmiss | 582 |