| Value | Category | 
                                    
                    
                        | -9 | Don't Know | 
                                    
                    
                        | -8 | Refused | 
                                    
                    
                        | -5 | Not Applicable | 
                                    
                    
                        | -3 | Missing | 
                                    
                    
                        | 2 |  | 
                                    
                    
                        | 5 |  | 
                                    
                    
                        | 10 |  | 
                                    
                    
                        | 12 |  | 
                                    
                    
                        | 18 |  | 
                                    
                    
                        | 20 |  | 
                                    
                    
                        | 30 |  | 
                                    
                    
                        | 40 |  | 
                                    
                    
                        | 50 |  | 
                                    
                    
                        | 55 |  | 
                                    
                    
                        | 60 |  | 
                                    
                    
                        | 61 |  | 
                                    
                    
                        | 70 |  | 
                                    
                    
                        | 75 |  | 
                                    
                    
                        | 80 |  | 
                                    
                    
                        | 83 |  | 
                                    
                    
                        | 92 |  | 
                                    
                    
                        | 100 |  | 
                                    
                    
                        | 102 |  | 
                                    
                    
                        | 110 |  | 
                                    
                    
                        | 120 |  | 
                                    
                    
                        | 123 |  | 
                                    
                    
                        | 132 |  | 
                                    
                    
                        | 140 |  | 
                                    
                    
                        | 144 |  | 
                                    
                    
                        | 150 |  | 
                                    
                    
                        | 152 |  | 
                                    
                    
                        | 160 |  | 
                                    
                    
                        | 170 |  | 
                                    
                    
                        | 176 |  | 
                                    
                    
                        | 177 |  | 
                                    
                    
                        | 180 |  | 
                                    
                    
                        | 190 |  | 
                                    
                    
                        | 195 |  | 
                                    
                    
                        | 200 |  | 
                                    
                    
                        | 207 |  | 
                                    
                    
                        | 208 |  | 
                                    
                    
                        | 210 |  | 
                                    
                    
                        | 219 |  | 
                                    
                    
                        | 220 |  | 
                                    
                    
                        | 230 |  | 
                                    
                    
                        | 235 |  | 
                                    
                    
                        | 240 |  | 
                                    
                    
                        | 250 |  | 
                                    
                    
                        | 265 |  | 
                                    
                    
                        | 270 |  | 
                                    
                    
                        | 280 |  | 
                                    
                    
                        | 290 |  | 
                                    
                    
                        | 300 |  | 
                                    
                    
                        | 330 |  | 
                                    
                    
                        | 350 |  | 
                                    
                    
                        | 352 |  | 
                                    
                    
                        | 368 |  | 
                                    
                    
                        | 377 |  | 
                                    
                    
                        | 399 |  | 
                                    
                    
                        | 400 |  | 
                                    
                    
                        | 450 |  | 
                                    
                    
                        | 473 |  | 
                                    
                    
                        | 480 |  | 
                                    
                    
                        | 500 |  | 
                                    
                    
                        | 550 |  | 
                                    
                    
                        | 560 |  | 
                                    
                    
                        | 580 |  | 
                                    
                    
                        | 600 |  | 
                                    
                    
                        | 610 |  | 
                                    
                    
                        | 650 |  | 
                                    
                    
                        | 700 |  | 
                                    
                    
                        | 760 |  | 
                                    
                    
                        | 800 |  | 
                                    
                    
                        | 843 |  | 
                                    
                    
                        | 1000 |  | 
                                    
                    
                        | 1100 |  | 
                                    
                    
                        | 1200 |  | 
                                    
                    
                        | 1800 |  | 
                                    
                    
                        | 3000 |  | 
                                    
                    
                        | 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.