| Value | Category | Cases | |
|---|---|---|---|
| 0 | 31 | 
                                                                 
                                    
                                    56.4%
                                 
                                                             | 
                                                        
                    |
| 1 | 20 | 
                                                                 
                                    
                                    36.4%
                                 
                                                             | 
                                                        
                    |
| 2 | 3 | 
                                                                 
                                    
                                    5.5%
                                 
                                                             | 
                                                        
                    |
| 3 | 1 | 
                                                                 
                                    
                                    1.8%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 173 |