| Value | Category | Cases | |
|---|---|---|---|
| 1 | Month | 52 |
74.3%
|
| 2 | Quarterly | 10 |
14.3%
|
| 3 | Six months | 3 |
4.3%
|
| 4 | Annually | 5 |
7.1%
|
| Sysmiss | 13211 |