| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 1801 | 
                                                                 
                                    
                                    93.3%
                                 
                                                             | 
                                                        
                    
| 2 | 1 time | 82 | 
                                                                 
                                    
                                    4.2%
                                 
                                                             | 
                                                        
                    
| 3 | 2 or 3 times | 23 | 
                                                                 
                                    
                                    1.2%
                                 
                                                             | 
                                                        
                    
| 4 | 4 or 5 times | 18 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    
| 5 | 6 or more times | 7 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 5 |