| Value | Category | 
                                    
                    
                        | 1 | Fluently | 
                                    
                    
                        | 2 | Rather good | 
                                    
                    
                        | 3 | Intermediate | 
                                    
                    
                        | 4 | Rather Poor | 
                                    
                    
                        | 5 | Very Poor | 
                                    
                    
                        | 6 | Cannot speak | 
                                    
                    
                        | 7 | DK/REF | 
                            
            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.