| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0 not used at all | 382 | 
                                                                 
                                    
                                    25.2%
                                 
                                                             | 
                                                        
                    
| 1 | 1 | 84 | 
                                                                 
                                    
                                    5.5%
                                 
                                                             | 
                                                        
                    
| 2 | 2 | 141 | 
                                                                 
                                    
                                    9.3%
                                 
                                                             | 
                                                        
                    
| 3 | 3 | 87 | 
                                                                 
                                    
                                    5.7%
                                 
                                                             | 
                                                        
                    
| 4 | 4 | 47 | 
                                                                 
                                    
                                    3.1%
                                 
                                                             | 
                                                        
                    
| 5 | 5 | 69 | 
                                                                 
                                    
                                    4.5%
                                 
                                                             | 
                                                        
                    
| 6 | 6 | 30 | 
                                                                 
                                    
                                    2%
                                 
                                                             | 
                                                        
                    
| 7 | 7 | 22 | 
                                                                 
                                    
                                    1.5%
                                 
                                                             | 
                                                        
                    
| 8 | 8 | 19 | 
                                                                 
                                    
                                    1.3%
                                 
                                                             | 
                                                        
                    
| 9 | 9 | 4 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    
| 10 | 10 used a lot | 6 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    
| 98 | 98 don't know | 1 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    
| 99 | 99 no answer | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 625 | 
                                                                 
                                    
                                    41.2%
                                 
                                                             |