| 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 |