| Value | Category | Cases | |
|---|---|---|---|
| 0 | 70 | 
                                    
                                    3.3%
                                 | |
| 1 | Lowest | 154 | 
                                    
                                    7.2%
                                 | 
| 2 | Second | 158 | 
                                    
                                    7.3%
                                 | 
| 3 | Middle | 174 | 
                                    
                                    8.1%
                                 | 
| 4 | Fourth | 171 | 
                                    
                                    7.9%
                                 | 
| 5 | Highest | 168 | 
                                    
                                    7.8%
                                 | 
| Sysmiss | 1258 | 
                                    
                                    58.4%
                                 |