| Value | Category | Cases | |
|---|---|---|---|
| 0 | 24 | 
                                    
                                    0.6%
                                 | |
| 1 | 81 | 
                                    
                                    2.2%
                                 | |
| 2 | 431 | 
                                    
                                    11.5%
                                 | |
| 3 | 3161 | 
                                    
                                    84.6%
                                 | |
| 4 | 35 | 
                                    
                                    0.9%
                                 | |
| 5 | 2 | 
                                    
                                    0.1%
                                 | |
| 7 | 3 | 
                                    
                                    0.1%
                                 | |
| Sysmiss | 1 |