| Value | Category | Cases | |
|---|---|---|---|
| 2014 | 16 | 
                                    
                                    2.2%
                                 | |
| 2015 | 576 | 
                                    
                                    80%
                                 | |
| 2016 | 128 | 
                                    
                                    17.8%
                                 | |
| Sysmiss | 269 |