| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 1191 |
5.5%
|
| 2 | Weekly | 3068 |
14.2%
|
| 3 | Monthly | 3000 |
13.8%
|
| 4 | Yearly | 481 |
2.2%
|
| 5 | Not at all | 13937 |
64.3%
|
| Sysmiss | 3431 |