| Value | Category | Cases | |
|---|---|---|---|
| 1 | Level 1 | 171 | 
                                                                 
                                    
                                    20.4%
                                 
                                                             | 
                                                        
                    
| 2 | Level 2 | 496 | 
                                                                 
                                    
                                    59.2%
                                 
                                                             | 
                                                        
                    
| 3 | Level 3 | 165 | 
                                                                 
                                    
                                    19.7%
                                 
                                                             | 
                                                        
                    
| 4 | Level 4 | 6 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 8766 |