| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2203 |
8.9%
|
| 2 | Monthly | 1457 |
5.9%
|
| 3 | Yearly | 1830 |
7.4%
|
| 4 | Not all | 19136 |
77.7%
|
| Sysmiss | 534 |