| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 232 |
0.9%
|
| 2 | Monthly | 502 |
2%
|
| 3 | Yearly | 1152 |
4.7%
|
| 4 | Less often | 2126 |
8.6%
|
| 5 | Not at all | 20638 |
83.7%
|
| Sysmiss | 510 |