| Value | Category | 
                                    
                    
                        | -7 | NA | 
                                    
                    
                        | -6 | NS | 
                                    
                    
                        | 1 | Alemania | 
                                    
                    
                        | 2 | Argentina | 
                                    
                    
                        | 3 | Bahamas | 
                                    
                    
                        | 4 | Brasil | 
                                    
                    
                        | 5 | Canada | 
                                    
                    
                        | 6 | Checoslovaquia | 
                                    
                    
                        | 7 | Chile | 
                                    
                    
                        | 8 | China/Hong Kong | 
                                    
                    
                        | 9 | Costa Rica | 
                                    
                    
                        | 10 | El Salvador | 
                                    
                    
                        | 11 | España | 
                                    
                    
                        | 12 | Estados Unidos/Miami | 
                                    
                    
                        | 13 | Francia | 
                                    
                    
                        | 14 | Guatemala | 
                                    
                    
                        | 15 | Holanda | 
                                    
                    
                        | 16 | Honduras | 
                                    
                    
                        | 17 | India | 
                                    
                    
                        | 18 | Ecuador | 
                                    
                    
                        | 19 | Belice | 
                                    
                    
                        | 20 | Suiza | 
                                    
                    
                        | 21 | Japón | 
                                    
                    
                        | 22 | México | 
                                    
                    
                        | 23 | Panamá | 
                                    
                    
                        | 24 | Pakistán | 
                                    
                    
                        | 25 | Taiwán | 
                                    
                    
                        | 26 | Inglaterra | 
                                    
                    
                        | 27 | Italia | 
                                    
                    
                        | 28 | Malasia | 
                                    
                    
                        | 29 | Rusia | 
                                    
                    
                        | 30 | Indonesia | 
                                    
                    
                        | 31 | Austria | 
                                    
                    
                        | 32 | Arabia Saudita | 
                                    
                    
                        | 33 | Australia | 
                                    
                    
                        | 34 | República Dominicana | 
                                    
                    
                        | 35 | Noruega | 
                                    
                    
                        | 36 | Suecia | 
                                    
                    
                        | 37 | Puerto Rico | 
                                    
                    
                        | 38 | Ucrania | 
                                    
                    
                        | 39 | Cuba | 
                                    
                    
                        | 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.