| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2152 |
8.7%
|
| 2 | Monthly | 10291 |
41.8%
|
| 3 | Yearly | 3789 |
15.4%
|
| 4 | Not all | 8394 |
34.1%
|
| Sysmiss | 534 |