| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 3052 |
14.4%
|
| 2 | Weekly | 1681 |
7.9%
|
| 3 | Monthly | 685 |
3.2%
|
| 4 | Yearly | 93 |
0.4%
|
| 5 | Not at all | 15675 |
74%
|
| Sysmiss | 3974 |