| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 146 |
0.7%
|
| 2 | Weekly | 276 |
1.3%
|
| 3 | Monthly | 604 |
2.8%
|
| 4 | Yearly | 223 |
1%
|
| 5 | Not at all | 20428 |
94.2%
|
| Sysmiss | 3431 |