| Value | Category | Cases | |
|---|---|---|---|
| 1 | Do not usually do it | 79 | 
                                                                 
                                    
                                    4.1%
                                 
                                                             | 
                                                        
                    
| 2 | Increased | 49 | 
                                                                 
                                    
                                    2.6%
                                 
                                                             | 
                                                        
                    
| 3 | Unchanged | 1712 | 
                                                                 
                                    
                                    89.4%
                                 
                                                             | 
                                                        
                    
| 4 | Decreased | 22 | 
                                                                 
                                    
                                    1.1%
                                 
                                                             | 
                                                        
                    
| 5 | Initially changed but has now returned to normal | 48 | 
                                                                 
                                    
                                    2.5%
                                 
                                                             | 
                                                        
                    
| 98 | I do not know | 4 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    
| 99 | Refused | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 228 |