| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1 | 
                                    
                                    0.4%
                                 | |
| 2 | 117 | 
                                    
                                    41.1%
                                 | |
| 3 | 3 | 
                                    
                                    1.1%
                                 | |
| 4 | 32 | 
                                    
                                    11.2%
                                 | |
| 5 | 126 | 
                                    
                                    44.2%
                                 | |
| 6 | 2 | 
                                    
                                    0.7%
                                 | |
| 7 | 4 | 
                                    
                                    1.4%
                                 | |
| Sysmiss | 511 |