| Value | Category | 
                                    
                    
                        | 1 | capital city | 
                                    
                    
                        | 2 | city with population over 1 million – other than capital | 
                                    
                    
                        | 3 | over 250.000 to 1 million | 
                                    
                    
                        | 4 | 50.000 to 250.000 | 
                                    
                    
                        | 5 | less than 50.000 | 
                            
            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.