| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1151 |
4.8%
|
| 2 | Monthly | 9109 |
38.3%
|
| 3 | Yearly | 1645 |
6.9%
|
| 4 | Not all | 11849 |
49.9%
|
| Sysmiss | 1058 |