| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 139 |
0.6%
|
| 2 | Monthly | 475 |
1.9%
|
| 3 | Yearly | 1489 |
6%
|
| 4 | Less often | 2965 |
12%
|
| 5 | Not at all | 19699 |
79.5%
|
| Sysmiss | 817 |