| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 962 |
3.9%
|
| 2 | Monthly | 927 |
3.7%
|
| 3 | Yearly | 911 |
3.7%
|
| 4 | Less often | 2126 |
8.6%
|
| 5 | Not at all | 19841 |
80.1%
|
| Sysmiss | 817 |