| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 819 |
3.3%
|
| 2 | Monthly | 2632 |
10.7%
|
| 3 | Yearly | 8796 |
35.7%
|
| 4 | Not all | 12379 |
50.3%
|
| Sysmiss | 534 |