| Value | Category | Cases | |
|---|---|---|---|
| 1 | higher than usual | 52 | 
                                    
                                    10.6%
                                 | 
| 2 | the same as usual | 206 | 
                                    
                                    42.1%
                                 | 
| 3 | less than usual | 200 | 
                                    
                                    40.9%
                                 | 
| 4 | no income | 31 | 
                                    
                                    6.3%
                                 | 
| Sysmiss | 2393 |