| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 69 |
3.8%
|
| 2 | Monthly | 373 |
20.6%
|
| 3 | Quarterly | 258 |
14.2%
|
| 4 | Annually | 492 |
27.2%
|
| 5 | Other (specify) | 82 |
4.5%
|
| 6 | No | 537 |
29.7%
|
| Sysmiss | 11928 |