| Value | Category | Cases | |
|---|---|---|---|
| 0 | 4 | 
                                    
                                    1%
                                 | |
| 1 | 231 | 
                                    
                                    57.9%
                                 | |
| 2 | 123 | 
                                    
                                    30.8%
                                 | |
| 3 | 27 | 
                                    
                                    6.8%
                                 | |
| 4 | 12 | 
                                    
                                    3%
                                 | |
| 5 | 1 | 
                                    
                                    0.3%
                                 | |
| 7 | 1 | 
                                    
                                    0.3%
                                 | |
| Sysmiss | 1 |