| Value | Category | 
                                    
                    
                        | 1 | Very unsafe | 
                                    
                    
                        | 2 | Neither safe nor unsafe | 
                                    
                    
                        | 3 | Generally safe | 
                                    
                    
                        | 4 | Very safe | 
                                    
                    
                        | 5 | Don't know | 
                            
            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.