| Value | Category | Cases | |
|---|---|---|---|
| 1 | weekly | 81 |
24.3%
|
| 2 | bi-weekly | 61 |
18.3%
|
| 3 | monthly | 35 |
10.5%
|
| 4 | annually | 17 |
5.1%
|
| 8 | don't know | 127 |
38.1%
|
| 9 | refused | 12 |
3.6%
|
| Sysmiss | 4927 |