| Value | 
                    Category | 
                                                                            
                                    
                    
                        | 2003 | 
                        2003  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 2004 | 
                        2004  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 2005 | 
                        2005  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 2006 | 
                        2006  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 2007 | 
                        2007  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 2008 | 
                        2008  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 9998 | 
                        Year can't be identified  | 
                        
                            
                        
                        
                        
                        
                            
                    
                            
            Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.