| Value | Category | Cases | |
|---|---|---|---|
| 1 | Much more | 6599 | 
                                    
                                    28.1%
                                 | 
| 2 | Little more | 6900 | 
                                    
                                    29.4%
                                 | 
| 3 | Approximately the same | 7216 | 
                                    
                                    30.8%
                                 | 
| 4 | Little less | 2387 | 
                                    
                                    10.2%
                                 | 
| 5 | Much less | 356 | 
                                    
                                    1.5%
                                 | 
| Sysmiss | 1486 |