| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 309 | 
                                                                 
                                    
                                    62.7%
                                 
                                                             | 
                                                        
                    
| 1 | 1-2 times | 83 | 
                                                                 
                                    
                                    16.8%
                                 
                                                             | 
                                                        
                    
| 2 | 2-5 times | 27 | 
                                                                 
                                    
                                    5.5%
                                 
                                                             | 
                                                        
                    
| 3 | More than 5 times | 74 | 
                                                                 
                                    
                                    15%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 8596 |