| Value | Category | Cases | |
|---|---|---|---|
| 2009 | 1 | 
                                                                 
                                    
                                    10%
                                 
                                                             | 
                                                        
                    |
| 2010 | 3 | 
                                                                 
                                    
                                    30%
                                 
                                                             | 
                                                        
                    |
| 2011 | 1 | 
                                                                 
                                    
                                    10%
                                 
                                                             | 
                                                        
                    |
| 2012 | 4 | 
                                                                 
                                    
                                    40%
                                 
                                                             | 
                                                        
                    |
| 2013 | 1 | 
                                                                 
                                    
                                    10%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 1424 |