| Value | Category | 
                                    
                    
                        | -9 | Don't know | 
                                    
                    
                        | -8 | Refused | 
                                    
                    
                        | -5 | Not Applicable | 
                                    
                    
                        | -3 | Missing | 
                                    
                    
                        | 10 |  | 
                                    
                    
                        | 50 |  | 
                                    
                    
                        | 60 |  | 
                                    
                    
                        | 70 |  | 
                                    
                    
                        | 80 |  | 
                                    
                    
                        | 90 |  | 
                                    
                    
                        | 100 |  | 
                                    
                    
                        | 120 |  | 
                                    
                    
                        | 130 |  | 
                                    
                    
                        | 150 |  | 
                                    
                    
                        | 160 |  | 
                                    
                    
                        | 170 |  | 
                                    
                    
                        | 200 |  | 
                                    
                    
                        | 210 |  | 
                                    
                    
                        | 228 |  | 
                                    
                    
                        | 240 |  | 
                                    
                    
                        | 250 |  | 
                                    
                    
                        | 260 |  | 
                                    
                    
                        | 300 |  | 
                                    
                    
                        | 320 |  | 
                                    
                    
                        | 400 |  | 
                                    
                    
                        | 420 |  | 
                                    
                    
                        | 450 |  | 
                                    
                    
                        | 500 |  | 
                                    
                    
                        | 505 |  | 
                                    
                    
                        | 540 |  | 
                                    
                    
                        | 550 |  | 
                                    
                    
                        | 600 |  | 
                                    
                    
                        | 630 |  | 
                                    
                    
                        | 648 |  | 
                                    
                    
                        | 650 |  | 
                                    
                    
                        | 670 |  | 
                                    
                    
                        | 691 |  | 
                                    
                    
                        | 700 |  | 
                                    
                    
                        | 800 |  | 
                                    
                    
                        | 850 |  | 
                                    
                    
                        | 870 |  | 
                                    
                    
                        | 900 |  | 
                                    
                    
                        | 940 |  | 
                                    
                    
                        | 1000 |  | 
                                    
                    
                        | 1020 |  | 
                                    
                    
                        | 1050 |  | 
                                    
                    
                        | 1100 |  | 
                                    
                    
                        | 1150 |  | 
                                    
                    
                        | 1170 |  | 
                                    
                    
                        | 1200 |  | 
                                    
                    
                        | 1300 |  | 
                                    
                    
                        | 1400 |  | 
                                    
                    
                        | 1500 |  | 
                                    
                    
                        | 1550 |  | 
                                    
                    
                        | 1575 |  | 
                                    
                    
                        | 1600 |  | 
                                    
                    
                        | 1700 |  | 
                                    
                    
                        | 1740 |  | 
                                    
                    
                        | 1752 |  | 
                                    
                    
                        | 1800 |  | 
                                    
                    
                        | 1900 |  | 
                                    
                    
                        | 1940 |  | 
                                    
                    
                        | 1950 |  | 
                                    
                    
                        | 1962 |  | 
                                    
                    
                        | 2000 |  | 
                                    
                    
                        | 2080 |  | 
                                    
                    
                        | 2154 |  | 
                                    
                    
                        | 2200 |  | 
                                    
                    
                        | 2300 |  | 
                                    
                    
                        | 2450 |  | 
                                    
                    
                        | 2500 |  | 
                                    
                    
                        | 2550 |  | 
                                    
                    
                        | 2600 |  | 
                                    
                    
                        | 2653 |  | 
                                    
                    
                        | 2700 |  | 
                                    
                    
                        | 2790 |  | 
                                    
                    
                        | 2800 |  | 
                                    
                    
                        | 2854 |  | 
                                    
                    
                        | 3000 |  | 
                                    
                    
                        | 3050 |  | 
                                    
                    
                        | 3099 |  | 
                                    
                    
                        | 3200 |  | 
                                    
                    
                        | 3350 |  | 
                                    
                    
                        | 3400 |  | 
                                    
                    
                        | 3500 |  | 
                                    
                    
                        | 3600 |  | 
                                    
                    
                        | 4000 |  | 
                                    
                    
                        | 4100 |  | 
                                    
                    
                        | 4188 |  | 
                                    
                    
                        | 4200 |  | 
                                    
                    
                        | 4500 |  | 
                                    
                    
                        | 4532 |  | 
                                    
                    
                        | 4800 |  | 
                                    
                    
                        | 4860 |  | 
                                    
                    
                        | 4870 |  | 
                                    
                    
                        | 4900 |  | 
                                    
                    
                        | 5000 |  | 
                                    
                    
                        | 5100 |  | 
                                    
                    
                        | 5200 |  | 
                                    
                    
                        | 5300 |  | 
                                    
                    
                        | 5350 |  | 
                                    
                    
                        | 5400 |  | 
                                    
                    
                        | 5500 |  | 
                                    
                    
                        | 5600 |  | 
                                    
                    
                        | 5800 |  | 
                                    
                    
                        | 6000 |  | 
                                    
                    
                        | 6240 |  | 
                                    
                    
                        | 6700 |  | 
                                    
                    
                        | 6800 |  | 
                                    
                    
                        | 7000 |  | 
                                    
                    
                        | 7159 |  | 
                                    
                    
                        | 7300 |  | 
                                    
                    
                        | 7500 |  | 
                                    
                    
                        | 7600 |  | 
                                    
                    
                        | 7700 |  | 
                                    
                    
                        | 8000 |  | 
                                    
                    
                        | 8200 |  | 
                                    
                    
                        | 8300 |  | 
                                    
                    
                        | 8420 |  | 
                                    
                    
                        | 8600 |  | 
                                    
                    
                        | 8700 |  | 
                                    
                    
                        | 8800 |  | 
                                    
                    
                        | 9000 |  | 
                                    
                    
                        | 9550 |  | 
                                    
                    
                        | 9600 |  | 
                                    
                    
                        | 9700 |  | 
                                    
                    
                        | 10000 |  | 
                                    
                    
                        | 10249 |  | 
                                    
                    
                        | 10300 |  | 
                                    
                    
                        | 10500 |  | 
                                    
                    
                        | 11000 |  | 
                                    
                    
                        | 11400 |  | 
                                    
                    
                        | 11607 |  | 
                                    
                    
                        | 11700 |  | 
                                    
                    
                        | 12000 |  | 
                                    
                    
                        | 12500 |  | 
                                    
                    
                        | 13000 |  | 
                                    
                    
                        | 14000 |  | 
                                    
                    
                        | 14850 |  | 
                                    
                    
                        | 15000 |  | 
                                    
                    
                        | 15680 |  | 
                                    
                    
                        | 17000 |  | 
                                    
                    
                        | 18000 |  | 
                                    
                    
                        | 19000 |  | 
                                    
                    
                        | 19151 |  | 
                                    
                    
                        | 21000 |  | 
                                    
                    
                        | 21400 |  | 
                                    
                    
                        | 23000 |  | 
                                    
                    
                        | 26100 |  | 
                                    
                    
                        | 28000 |  | 
                                    
                    
                        | 29000 |  | 
                                    
                    
                        | 30000 |  | 
                                    
                    
                        | 40000 |  | 
                                    
                    
                        | 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.