| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 3382 |
13.7%
|
| 2 | Monthly | 2381 |
9.7%
|
| 3 | Yearly | 1617 |
6.6%
|
| 4 | Not all | 17246 |
70%
|
| Sysmiss | 534 |