| Value | Category | Cases | |
|---|---|---|---|
| 0 | 6 | 
                                    
                                    0.6%
                                 | |
| 1 | 53 | 
                                    
                                    5.3%
                                 | |
| 2 | 170 | 
                                    
                                    17.1%
                                 | |
| 3 | 235 | 
                                    
                                    23.6%
                                 | |
| 4 | 87 | 
                                    
                                    8.8%
                                 | |
| 5 | 40 | 
                                    
                                    4%
                                 | |
| 6 | 15 | 
                                    
                                    1.5%
                                 | |
| 7 | 388 | 
                                    
                                    39%
                                 | |
| Sysmiss | 2974 |