| Value | Category | Cases | |
|---|---|---|---|
| 0 | 59 | 
                                                                 
                                    
                                    19.8%
                                 
                                                             | 
                                                        
                    |
| 1 | 213 | 
                                                                 
                                    
                                    71.5%
                                 
                                                             | 
                                                        
                    |
| 2 | 21 | 
                                                                 
                                    
                                    7%
                                 
                                                             | 
                                                        
                    |
| 3 | 5 | 
                                                                 
                                    
                                    1.7%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 12 |