| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2477 |
10.1%
|
| 2 | Monthly | 4341 |
17.6%
|
| 3 | Yearly | 3406 |
13.8%
|
| 4 | Not all | 14402 |
58.5%
|
| Sysmiss | 534 |