| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 801 |
3.8%
|
| 2 | Weekly | 2658 |
12.5%
|
| 3 | Monthly | 3165 |
14.9%
|
| 4 | Yearly | 502 |
2.4%
|
| 5 | Not at all | 14060 |
66.4%
|
| Sysmiss | 3974 |