| Value | Category | Cases | |
|---|---|---|---|
| 1 | Grade 5 | 535 | 
                                                                 
                                    
                                    23.9%
                                 
                                                             | 
                                                        
                    
| 2 | Grade 3 | 1582 | 
                                                                 
                                    
                                    70.8%
                                 
                                                             | 
                                                        
                    
| 3 | Unrestrained, unlicensed | 118 | 
                                                                 
                                    
                                    5.3%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 115 |