| Value | Category | Cases | |
|---|---|---|---|
| 1 | Monthly | 1605 |
36.8%
|
| 2 | Bi-monthly | 678 |
15.6%
|
| 3 | Bi-annually | 167 |
3.8%
|
| 4 | Annually | 254 |
5.8%
|
| 5 | Every two years | 163 |
3.7%
|
| 6 | Other | 936 |
21.5%
|
| 7 | 556 |
12.8%
|
|
| Sysmiss | 13641 |