| Value | Category | Cases | |
|---|---|---|---|
| 1 | Lowest | 1125 | 
                                    
                                    13.4%
                                 | 
| 2 | Second | 1099 | 
                                    
                                    13.1%
                                 | 
| 3 | Middle | 953 | 
                                    
                                    11.3%
                                 | 
| 4 | Fourth | 1014 | 
                                    
                                    12.1%
                                 | 
| 5 | Highest | 1027 | 
                                    
                                    12.2%
                                 | 
| Sysmiss | 3184 | 
                                    
                                    37.9%
                                 |