| Value | Category | 
                                    
                    
                        | -9 | Don't Know | 
                                    
                    
                        | -8 | Refused | 
                                    
                    
                        | -5 | Not Applicable | 
                                    
                    
                        | -3 | Missing | 
                                    
                    
                        | 0 |  | 
                                    
                    
                        | 10 |  | 
                                    
                    
                        | 15 |  | 
                                    
                    
                        | 20 |  | 
                                    
                    
                        | 25 |  | 
                                    
                    
                        | 30 |  | 
                                    
                    
                        | 31 |  | 
                                    
                    
                        | 35 |  | 
                                    
                    
                        | 40 |  | 
                                    
                    
                        | 50 |  | 
                                    
                    
                        | 60 |  | 
                                    
                    
                        | 65 |  | 
                                    
                    
                        | 70 |  | 
                                    
                    
                        | 80 |  | 
                                    
                    
                        | 85 |  | 
                                    
                    
                        | 99 |  | 
                                    
                    
                        | 100 |  | 
                                    
                    
                        | 120 |  | 
                                    
                    
                        | 130 |  | 
                                    
                    
                        | 135 |  | 
                                    
                    
                        | 140 |  | 
                                    
                    
                        | 150 |  | 
                                    
                    
                        | 160 |  | 
                                    
                    
                        | 180 |  | 
                                    
                    
                        | 190 |  | 
                                    
                    
                        | 200 |  | 
                                    
                    
                        | 210 |  | 
                                    
                    
                        | 240 |  | 
                                    
                    
                        | 250 |  | 
                                    
                    
                        | 280 |  | 
                                    
                    
                        | 300 |  | 
                                    
                    
                        | 320 |  | 
                                    
                    
                        | 340 |  | 
                                    
                    
                        | 350 |  | 
                                    
                    
                        | 360 |  | 
                                    
                    
                        | 400 |  | 
                                    
                    
                        | 450 |  | 
                                    
                    
                        | 480 |  | 
                                    
                    
                        | 500 |  | 
                                    
                    
                        | 520 |  | 
                                    
                    
                        | 550 |  | 
                                    
                    
                        | 560 |  | 
                                    
                    
                        | 585 |  | 
                                    
                    
                        | 600 |  | 
                                    
                    
                        | 630 |  | 
                                    
                    
                        | 640 |  | 
                                    
                    
                        | 650 |  | 
                                    
                    
                        | 680 |  | 
                                    
                    
                        | 700 |  | 
                                    
                    
                        | 750 |  | 
                                    
                    
                        | 800 |  | 
                                    
                    
                        | 850 |  | 
                                    
                    
                        | 900 |  | 
                                    
                    
                        | 920 |  | 
                                    
                    
                        | 950 |  | 
                                    
                    
                        | 980 |  | 
                                    
                    
                        | 1000 |  | 
                                    
                    
                        | 1050 |  | 
                                    
                    
                        | 1080 |  | 
                                    
                    
                        | 1100 |  | 
                                    
                    
                        | 1120 |  | 
                                    
                    
                        | 1150 |  | 
                                    
                    
                        | 1200 |  | 
                                    
                    
                        | 1260 |  | 
                                    
                    
                        | 1300 |  | 
                                    
                    
                        | 1360 |  | 
                                    
                    
                        | 1400 |  | 
                                    
                    
                        | 1500 |  | 
                                    
                    
                        | 1580 |  | 
                                    
                    
                        | 1600 |  | 
                                    
                    
                        | 1700 |  | 
                                    
                    
                        | 1750 |  | 
                                    
                    
                        | 1800 |  | 
                                    
                    
                        | 1900 |  | 
                                    
                    
                        | 2000 |  | 
                                    
                    
                        | 2100 |  | 
                                    
                    
                        | 2200 |  | 
                                    
                    
                        | 2400 |  | 
                                    
                    
                        | 2500 |  | 
                                    
                    
                        | 3000 |  | 
                                    
                    
                        | 3400 |  | 
                                    
                    
                        | 3600 |  | 
                                    
                    
                        | 4000 |  | 
                                    
                    
                        | 4200 |  | 
                                    
                    
                        | 4350 |  | 
                                    
                    
                        | 5000 |  | 
                                    
                    
                        | 6000 |  | 
                                    
                    
                        | 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.