| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0 not used at all | 616 | 
                                                                 
                                    
                                    40.6%
                                 
                                                             | 
                                                        
                    
| 1 | 1 | 34 | 
                                                                 
                                    
                                    2.2%
                                 
                                                             | 
                                                        
                    
| 2 | 2 | 52 | 
                                                                 
                                    
                                    3.4%
                                 
                                                             | 
                                                        
                    
| 3 | 3 | 27 | 
                                                                 
                                    
                                    1.8%
                                 
                                                             | 
                                                        
                    
| 4 | 4 | 27 | 
                                                                 
                                    
                                    1.8%
                                 
                                                             | 
                                                        
                    
| 5 | 5 | 44 | 
                                                                 
                                    
                                    2.9%
                                 
                                                             | 
                                                        
                    
| 6 | 6 | 22 | 
                                                                 
                                    
                                    1.5%
                                 
                                                             | 
                                                        
                    
| 7 | 7 | 17 | 
                                                                 
                                    
                                    1.1%
                                 
                                                             | 
                                                        
                    
| 8 | 8 | 18 | 
                                                                 
                                    
                                    1.2%
                                 
                                                             | 
                                                        
                    
| 9 | 9 | 11 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    
| 10 | 10 used a lot | 4 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    
| 98 | 98 don't know | 3 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    
| 99 | 99 no answer | 17 | 
                                                                 
                                    
                                    1.1%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 625 | 
                                                                 
                                    
                                    41.2%
                                 
                                                             |