| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 112 |
0.5%
|
| 2 | Monthly | 441 |
1.8%
|
| 3 | Yearly | 1216 |
4.9%
|
| 4 | Less often | 1844 |
7.5%
|
| 5 | Not at all | 21037 |
85.3%
|
| Sysmiss | 510 |