| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 54 |
2.7%
|
| 2 | Monthly | 1809 |
91.3%
|
| 3 | Quarterly | 76 |
3.8%
|
| 9 | Other | 42 |
2.1%
|
| Sysmiss | 1117 |