| Value | Category | Cases | |
|---|---|---|---|
| 0 | 21 | 
                                    
                                    0.9%
                                 | |
| 1 | 162 | 
                                    
                                    6.6%
                                 | |
| 2 | 709 | 
                                    
                                    28.8%
                                 | |
| 3 | 1025 | 
                                    
                                    41.7%
                                 | |
| 4 | 487 | 
                                    
                                    19.8%
                                 | |
| 5 | 56 | 
                                    
                                    2.3%
                                 | |
| Sysmiss | 1181 |