| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 3941 |
16%
|
| 2 | Monthly | 3872 |
15.7%
|
| 3 | Yearly | 3147 |
12.8%
|
| 4 | Not all | 13666 |
55.5%
|
| Sysmiss | 534 |