| Value | Category | 
                                    
                    
                        | -5 | other | 
                                    
                    
                        | -4 | missing | 
                                    
                    
                        | -3 | refused to answer | 
                                    
                    
                        | -2 | not applicable | 
                                    
                    
                        | -1 | do not know | 
                                    
                    
                        | 0 |  | 
                                    
                    
                        | 40 |  | 
                                    
                    
                        | 100 |  | 
                                    
                    
                        | 180 |  | 
                                    
                    
                        | 200 |  | 
                                    
                    
                        | 250 |  | 
                                    
                    
                        | 300 |  | 
                                    
                    
                        | 360 |  | 
                                    
                    
                        | 500 |  | 
                                    
                    
                        | 550 |  | 
                                    
                    
                        | 600 |  | 
                                    
                    
                        | 690 |  | 
                                    
                    
                        | 700 |  | 
                                    
                    
                        | 800 |  | 
                                    
                    
                        | 850 |  | 
                                    
                    
                        | 875 |  | 
                                    
                    
                        | 900 |  | 
                                    
                    
                        | 1000 |  | 
                                    
                    
                        | 1100 |  | 
                                    
                    
                        | 1200 |  | 
                                    
                    
                        | 1300 |  | 
                                    
                    
                        | 1400 |  | 
                                    
                    
                        | 1500 |  | 
                                    
                    
                        | 1800 |  | 
                                    
                    
                        | 2000 |  | 
                                    
                    
                        | 2100 |  | 
                                    
                    
                        | 2300 |  | 
                                    
                    
                        | 2400 |  | 
                                    
                    
                        | 2500 |  | 
                                    
                    
                        | 2600 |  | 
                                    
                    
                        | 2700 |  | 
                                    
                    
                        | 2750 |  | 
                                    
                    
                        | 2800 |  | 
                                    
                    
                        | 3000 |  | 
                                    
                    
                        | 3080 |  | 
                                    
                    
                        | 3300 |  | 
                                    
                    
                        | 3400 |  | 
                                    
                    
                        | 3500 |  | 
                                    
                    
                        | 3600 |  | 
                                    
                    
                        | 3651 |  | 
                                    
                    
                        | 3700 |  | 
                                    
                    
                        | 3900 |  | 
                                    
                    
                        | 4000 |  | 
                                    
                    
                        | 4240 |  | 
                                    
                    
                        | 4300 |  | 
                                    
                    
                        | 4500 |  | 
                                    
                    
                        | 5000 |  | 
                                    
                    
                        | 5200 |  | 
                                    
                    
                        | 5300 |  | 
                                    
                    
                        | 5400 |  | 
                                    
                    
                        | 5500 |  | 
                                    
                    
                        | 5700 |  | 
                                    
                    
                        | 6000 |  | 
                                    
                    
                        | 6070 |  | 
                                    
                    
                        | 6200 |  | 
                                    
                    
                        | 6500 |  | 
                                    
                    
                        | 6700 |  | 
                                    
                    
                        | 7000 |  | 
                                    
                    
                        | 7400 |  | 
                                    
                    
                        | 8000 |  | 
                                    
                    
                        | 8100 |  | 
                                    
                    
                        | 8700 |  | 
                                    
                    
                        | 9000 |  | 
                                    
                    
                        | 9800 |  | 
                                    
                    
                        | 10000 |  | 
                                    
                    
                        | 11000 |  | 
                                    
                    
                        | 12000 |  | 
                                    
                    
                        | 13000 |  | 
                                    
                    
                        | 13322.26953125 |  | 
                                    
                    
                        | 13600 |  | 
                                    
                    
                        | 14000 |  | 
                                    
                    
                        | 15000 |  | 
                                    
                    
                        | 16000 |  | 
                                    
                    
                        | 17000 |  | 
                                    
                    
                        | 18000 |  | 
                                    
                    
                        | 20000 |  | 
                                    
                    
                        | 25000 |  | 
                                    
                    
                        | 28000 |  | 
                                    
                    
                        | 30000 |  | 
                                    
                    
                        | 50000 |  | 
                            
            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.