| Value | Category | 
                                    
                    
                        | -5 | other | 
                                    
                    
                        | -4 | missing data | 
                                    
                    
                        | -3 | refused to answer | 
                                    
                    
                        | -2 | not applicable | 
                                    
                    
                        | -1 | do not know | 
                                    
                    
                        | 75 |  | 
                                    
                    
                        | 100 |  | 
                                    
                    
                        | 130 |  | 
                                    
                    
                        | 140 |  | 
                                    
                    
                        | 150 |  | 
                                    
                    
                        | 160 |  | 
                                    
                    
                        | 170 |  | 
                                    
                    
                        | 180 |  | 
                                    
                    
                        | 200 |  | 
                                    
                    
                        | 240 |  | 
                                    
                    
                        | 250 |  | 
                                    
                    
                        | 251 |  | 
                                    
                    
                        | 270 |  | 
                                    
                    
                        | 300 |  | 
                                    
                    
                        | 320 |  | 
                                    
                    
                        | 333 |  | 
                                    
                    
                        | 340 |  | 
                                    
                    
                        | 350 |  | 
                                    
                    
                        | 370 |  | 
                                    
                    
                        | 400 |  | 
                                    
                    
                        | 450 |  | 
                                    
                    
                        | 500 |  | 
                                    
                    
                        | 500.3 |  | 
                                    
                    
                        | 510 |  | 
                                    
                    
                        | 520 |  | 
                                    
                    
                        | 530 |  | 
                                    
                    
                        | 570 |  | 
                                    
                    
                        | 600 |  | 
                                    
                    
                        | 600.4 |  | 
                                    
                    
                        | 610 |  | 
                                    
                    
                        | 620 |  | 
                                    
                    
                        | 630 |  | 
                                    
                    
                        | 640 |  | 
                                    
                    
                        | 647 |  | 
                                    
                    
                        | 650 |  | 
                                    
                    
                        | 660 |  | 
                                    
                    
                        | 670 |  | 
                                    
                    
                        | 680 |  | 
                                    
                    
                        | 690 |  | 
                                    
                    
                        | 700 |  | 
                                    
                    
                        | 710 |  | 
                                    
                    
                        | 720 |  | 
                                    
                    
                        | 740 |  | 
                                    
                    
                        | 750 |  | 
                                    
                    
                        | 780 |  | 
                                    
                    
                        | 800 |  | 
                                    
                    
                        | 900 |  | 
                                    
                    
                        | 944 |  | 
                                    
                    
                        | 1000 |  | 
                                    
                    
                        | 1040 |  | 
                                    
                    
                        | 1100 |  | 
                                    
                    
                        | 1200 |  | 
                                    
                    
                        | 1284 |  | 
                                    
                    
                        | 1300 |  | 
                                    
                    
                        | 1500 |  | 
                                    
                    
                        | 1600.68 |  | 
                                    
                    
                        | 1603 |  | 
                                    
                    
                        | 1700 |  | 
                                    
                    
                        | 1800 |  | 
                                    
                    
                        | 1900 |  | 
                                    
                    
                        | 2000 |  | 
                                    
                    
                        | 2200 |  | 
                                    
                    
                        | 2500 |  | 
                                    
                    
                        | 3000 |  | 
                                    
                    
                        | 3200 |  | 
                                    
                    
                        | 3237 |  | 
                                    
                    
                        | 3300 |  | 
                                    
                    
                        | 3800 |  | 
                                    
                    
                        | 3900 |  | 
                                    
                    
                        | 4000 |  | 
                                    
                    
                        | 4100 |  | 
                                    
                    
                        | 5000 |  | 
                                    
                    
                        | 5600 |  | 
                                    
                    
                        | 6000 |  | 
                                    
                    
                        | 8000 |  | 
                                    
                    
                        | 13000 |  | 
                                    
                    
                        | 18000 |  | 
                                    
                    
                        | 55000 |  | 
                                    
                    
                        | 65000 |  | 
                                    
                    
                        | 93000 |  | 
                                    
                    
                        | 100000 |  | 
                            
            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.