| Value | Category | Cases | |
|---|---|---|---|
| 1 | HYBRID | 276 |
2.5%
|
| 2 | IMPROVED | 1009 |
9.3%
|
| 3 | TRADITIONAL | 4101 |
37.8%
|
| 4 | LOCAL | 5457 |
50.3%
|
| Sysmiss | 997 |