| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 182 |
0.7%
|
| 2 | Monthly | 497 |
2%
|
| 3 | Yearly | 895 |
3.6%
|
| 4 | Less often | 1980 |
8%
|
| 5 | Not at all | 21096 |
85.6%
|
| Sysmiss | 510 |