| Value | Category | Cases | |
|---|---|---|---|
| 2010 | 2 | 
                                                                 
                                    
                                    25%
                                 
                                                             | 
                                                        
                    |
| 2011 | 5 | 
                                                                 
                                    
                                    62.5%
                                 
                                                             | 
                                                        
                    |
| 2012 | 1 | 
                                                                 
                                    
                                    12.5%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 632 |