| Value | Category | 
                                    
                    
                        | -1 | Missing | 
                                    
                    
                        | 0 | 00 | 
                                    
                    
                        | 1 | 01 | 
                                    
                    
                        | 2 | 02 | 
                                    
                    
                        | 3 | 03 | 
                                    
                    
                        | 4 | 04 | 
                                    
                    
                        | 5 | 05 | 
                                    
                    
                        | 6 | 06 | 
                                    
                    
                        | 7 | 07 | 
                                    
                    
                        | 8 | 08 | 
                                    
                    
                        | 9 | 09 | 
                                    
                    
                        | 10 | 10 | 
                                    
                    
                        | 98 | Refused | 
                                    
                    
                        | 99 | Don't know/Haven't heard enough | 
                            
            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.