| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 927 | 
                                                                 
                                    
                                    8.5%
                                 
                                                             | 
                                                        
                    
| 2 | 1-3 times | 6758 | 
                                                                 
                                    
                                    62%
                                 
                                                             | 
                                                        
                    
| 3 | 3+ times | 3217 | 
                                                                 
                                    
                                    29.5%
                                 
                                                             | 
                                                        
                    
| 22 | 1 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 13 |