| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 1 | Increased a lot | 350 | 
                                    
                                    29.2%
                                 | 
| 2 | Increased somewhat | 111 | 
                                    
                                    9.3%
                                 | 
| 3 | Stayed the same | 161 | 
                                    
                                    13.4%
                                 | 
| 4 | Decreased somewhat | 272 | 
                                    
                                    22.7%
                                 | 
| 5 | Decreased a lot | 227 | 
                                    
                                    18.9%
                                 | 
| 9 | Don't know | 79 | 
                                    
                                    6.6%
                                 | 
| 98 | Refused | 0 | 
                                    
                                    0%
                                 |