| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 400 |
1.6%
|
| 2 | Monthly | 507 |
2%
|
| 3 | Yearly | 776 |
3.1%
|
| 4 | Less often | 2019 |
8.2%
|
| 5 | Not at all | 21065 |
85.1%
|
| Sysmiss | 817 |