| Value | Category | Cases | |
|---|---|---|---|
| 1 | More than then | 827 | 
                                    
                                    3.5%
                                 | 
| 2 | The same as then | 11113 | 
                                    
                                    47.4%
                                 | 
| 3 | Less than then | 11518 | 
                                    
                                    49.1%
                                 | 
| Sysmiss | 1486 |