| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1016 |
4.4%
|
| 2 | Monthly | 8234 |
35.3%
|
| 3 | Yearly | 2013 |
8.6%
|
| 4 | Not all | 12071 |
51.7%
|
| Sysmiss | 1073 |