| Value | Category | Cases | |
|---|---|---|---|
| 2014 | 1 | 
                                    
                                    0.3%
                                 | |
| 2015 | 2 | 
                                    
                                    0.7%
                                 | |
| 2016 | 43 | 
                                    
                                    14.4%
                                 | |
| 2017 | 66 | 
                                    
                                    22.1%
                                 | |
| 2018 | 107 | 
                                    
                                    35.9%
                                 | |
| 2019 | 79 | 
                                    
                                    26.5%
                                 | |
| Sysmiss | 712 |