| Value | Category | Cases | |
|---|---|---|---|
| 1 | Monthly | 8 |
57.1%
|
| 2 | Quarterly | 2 |
14.3%
|
| 3 | Annually | 0 |
0%
|
| 4 | One off | 4 |
28.6%
|
| Sysmiss | 1839 |