| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 476 |
1.9%
|
| 2 | Monthly | 2430 |
9.9%
|
| 3 | Yearly | 1661 |
6.7%
|
| 4 | Not all | 20059 |
81.5%
|
| Sysmiss | 534 |