| Value | Category | Cases | |
|---|---|---|---|
| 1986 | 2 | 
                                    
                                    14.3%
                                 | |
| 1994 | 1 | 
                                    
                                    7.1%
                                 | |
| 1996 | 1 | 
                                    
                                    7.1%
                                 | |
| 2001 | 1 | 
                                    
                                    7.1%
                                 | |
| 2006 | 1 | 
                                    
                                    7.1%
                                 | |
| 2013 | 6 | 
                                    
                                    42.9%
                                 | |
| 2014 | 1 | 
                                    
                                    7.1%
                                 | |
| 2015 | 1 | 
                                    
                                    7.1%
                                 | |
| Sysmiss | 32125 |