| Value | Category | Cases | |
|---|---|---|---|
| 1 | Monthly | 612 |
3.4%
|
| 2 | Quarterly | 1403 |
7.9%
|
| 3 | Half-yearly | 904 |
5.1%
|
| 4 | Annually | 1807 |
10.2%
|
| 5 | Never | 12765 |
71.9%
|
| 6 | Don't Know | 258 |
1.5%
|
| Sysmiss | 5733 |