| Value | Category | Cases | |
|---|---|---|---|
| 2018 | 354 | 
                                                                 
                                    
                                    77.3%
                                 
                                                             | 
                                                        
                    |
| 2019 | 90 | 
                                                                 
                                    
                                    19.7%
                                 
                                                             | 
                                                        
                    |
| 2020 | 12 | 
                                                                 
                                    
                                    2.6%
                                 
                                                             | 
                                                        
                    |
| 2021 | 2 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 386 |