| Value | Category | Cases | |
|---|---|---|---|
| 1 | Once | 25 | 
                                                                 
                                    
                                    56.8%
                                 
                                                             | 
                                                        
                    
| 2 | Twice | 11 | 
                                                                 
                                    
                                    25%
                                 
                                                             | 
                                                        
                    
| 3 | Three times | 7 | 
                                                                 
                                    
                                    15.9%
                                 
                                                             | 
                                                        
                    
| 4 | 4-9 times | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 5 | 10 or more times | 1 | 
                                                                 
                                    
                                    2.3%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 17544 |