| Value | Category | Cases | |
|---|---|---|---|
| 1 | Monthly | 1565 |
9%
|
| 2 | Quarterly | 1831 |
10.6%
|
| 3 | Half-yearly | 699 |
4%
|
| 4 | Annually | 987 |
5.7%
|
| 5 | Never | 11968 |
69.1%
|
| 6 | Don't Know | 269 |
1.6%
|
| Sysmiss | 6163 |