| Value | Category | Cases | |
|---|---|---|---|
| 2005 | 1 | 
                                    
                                    5.3%
                                 | |
| 2014 | 17 | 
                                    
                                    89.5%
                                 | |
| 2015 | 1 | 
                                    
                                    5.3%
                                 | |
| Sysmiss | 1481 |