| Value | Category | Cases | |
|---|---|---|---|
| 1 | up to 8000 | 65 | 
                                    
                                    1.3%
                                 | 
| 2 | 8001-12000 | 453 | 
                                    
                                    8.8%
                                 | 
| 3 | 12001-16000 | 1876 | 
                                    
                                    36.4%
                                 | 
| 4 | 16001-20000 | 1758 | 
                                    
                                    34.1%
                                 | 
| 5 | 20001-30000 | 888 | 
                                    
                                    17.2%
                                 | 
| 6 | 30001-40000 | 82 | 
                                    
                                    1.6%
                                 | 
| 7 | 40001 and more | 37 | 
                                    
                                    0.7%
                                 | 
| Sysmiss | 48478 |