| Value | Category | Cases | |
|---|---|---|---|
| 1 | Per Week | 0 |
0%
|
| 2 | Per Month | 34 |
28.8%
|
| 3 | Per Year | 28 |
23.7%
|
| 4 | Quarterly | 23 |
19.5%
|
| 5 | Semi-anually | 33 |
28%
|
| Sysmiss | 624 |