| Value | Category | Cases | |
|---|---|---|---|
| 2000 | 2 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 2002 | 307 | 
                                                                 
                                    
                                    24.1%
                                 
                                                             | 
                                                        
                    |
| 2003 | 578 | 
                                                                 
                                    
                                    45.4%
                                 
                                                             | 
                                                        
                    |
| 2004 | 387 | 
                                                                 
                                    
                                    30.4%
                                 
                                                             |