| Value | Category | Cases | |
|---|---|---|---|
| 1 | Always | 7877 | 
                                                                 
                                    
                                    13.2%
                                 
                                                             | 
                                                        
                    
| 2 | Often | 1195 | 
                                                                 
                                    
                                    2%
                                 
                                                             | 
                                                        
                    
| 3 | Not often | 711 | 
                                                                 
                                    
                                    1.2%
                                 
                                                             | 
                                                        
                    
| 4 | Not needed | 46177 | 
                                                                 
                                    
                                    77.6%
                                 
                                                             | 
                                                        
                    
| 5 | No | 3512 | 
                                                                 
                                    
                                    5.9%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 21772 |