| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1157 |
4.7%
|
| 2 | Monthly | 2453 |
10%
|
| 3 | Yearly | 3462 |
14.1%
|
| 4 | Not all | 17554 |
71.3%
|
| Sysmiss | 534 |