| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 142 |
0.6%
|
| 2 | Monthly | 482 |
1.9%
|
| 3 | Yearly | 991 |
4%
|
| 4 | Less often | 2294 |
9.3%
|
| 5 | Not at all | 20858 |
84.2%
|
| Sysmiss | 817 |