| Value | 
                    Category | 
                                                                            
                                    
                    
                        | 0 | 
                        Not given  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 2014 | 
                        2014  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 2015 | 
                        2015  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 2016 | 
                        2016  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 2017 | 
                        2017  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 4444 | 
                        Marked on card  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 6666 | 
                        Mother reported  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 9998 | 
                        Don't know/Incomplete  | 
                        
                            
                        
                        
                        
                        
                            
                    
                            
            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.