| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 4537 |
20.9%
|
| 2 | Weekly | 1482 |
6.8%
|
| 3 | Monthly | 465 |
2.1%
|
| 4 | Yearly | 59 |
0.3%
|
| 5 | Not at all | 15134 |
69.8%
|
| Sysmiss | 3431 |