| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 1119 |
5.2%
|
| 2 | Weekly | 570 |
2.6%
|
| 3 | Monthly | 319 |
1.5%
|
| 4 | Yearly | 71 |
0.3%
|
| 5 | Not at all | 19598 |
90.4%
|
| Sysmiss | 3431 |