| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 156 |
0.6%
|
| 2 | Monthly | 649 |
2.6%
|
| 3 | Yearly | 2240 |
9.1%
|
| 4 | Not all | 21581 |
87.6%
|
| Sysmiss | 534 |