| Value | Category | Cases | |
|---|---|---|---|
| 0 | 5 | 
                                    
                                    0.2%
                                 | |
| 2010 | 683 | 
                                    
                                    28.6%
                                 | |
| 2011 | 1704 | 
                                    
                                    71.2%
                                 |