| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 67 |
0.3%
|
| 2 | Weekly | 134 |
0.6%
|
| 3 | Monthly | 103 |
0.5%
|
| 4 | Yearly | 54 |
0.3%
|
| 5 | Not at all | 20828 |
98.3%
|
| Sysmiss | 3974 |