| Value | Category | Cases | |
|---|---|---|---|
| 1 | Monthly | 186 |
25.6%
|
| 2 | Quarterly | 324 |
44.6%
|
| 3 | Twice a year | 98 |
13.5%
|
| 4 | Annually | 119 |
16.4%
|
| Sysmiss | 209 |