| Value | Category | Cases | |
|---|---|---|---|
| 6 | 1 | 
                                                                 
                                    
                                    1.3%
                                 
                                                             | 
                                                        
                    |
| 2017 | 21 | 
                                                                 
                                    
                                    27.6%
                                 
                                                             | 
                                                        
                    |
| 2018 | 47 | 
                                                                 
                                    
                                    61.8%
                                 
                                                             | 
                                                        
                    |
| 2019 | 7 | 
                                                                 
                                    
                                    9.2%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 677 |