| Value | 
                    Category | 
                                                                            
                                    
                    
                        | 0 | 
                        None  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 1 | 
                        Primary Class 1  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 2 | 
                        Primary Class 2  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 3 | 
                        Primary Class 3  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 4 | 
                        Primary Class 4  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 5 | 
                        Primary Class 5  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 6 | 
                        Primary Class 6  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 7 | 
                        Primary Class 7  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 8 | 
                        Primary Class 8  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 9 | 
                        Primary Class 9  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 10 | 
                        Secondary Class 1  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 11 | 
                        Secondary Class 2  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 12 | 
                        Secondary Class 3  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 13 | 
                        Secondary/Technical Class 1  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 14 | 
                        Secondary/Technical Class 2  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 15 | 
                        Secondary/Technical Class 3  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 16 | 
                        Polytechnic/Diploma Year 1  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 17 | 
                        Polytechnic/Diploma Year 2  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 18 | 
                        Polytechnic/Diploma Year 3  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 19 | 
                        University Year 1  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 20 | 
                        University Year 2  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 21 | 
                        University Year 3  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 22 | 
                        University Year 4  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 23 | 
                        University Year 5  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 24 | 
                        University Master and PhD  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 25 | 
                        Non formal less than 1 year  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 26 | 
                        Non formal 1 year  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 27 | 
                        Non formal 2 years  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 28 | 
                        Non formal 3 years  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 29 | 
                        Non formal 4 years  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 30 | 
                        Non formal 5 years  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 31 | 
                        Non formal 6 years  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 99 | 
                        Not stated  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | Sysmiss | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                            
            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.