| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 7846 |
37%
|
| 2 | Weekly | 4703 |
22.2%
|
| 3 | Monthly | 1310 |
6.2%
|
| 4 | Yearly | 177 |
0.8%
|
| 5 | Not at all | 7150 |
33.7%
|
| Sysmiss | 3974 |