| Value | Category | Cases | |
|---|---|---|---|
| 2010 | 120 | 
                                                                 
                                    
                                    49.8%
                                 
                                                             | 
                                                        
                    |
| 2011 | 121 | 
                                                                 
                                    
                                    50.2%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 29009 |