| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 411 |
1.6%
|
| 2 | Monthly | 2723 |
10.9%
|
| 3 | Yearly | 6115 |
24.4%
|
| 4 | Not all | 15796 |
63.1%
|
| Sysmiss | 69 |