| Value | Category | 
                                    
                    
                        | -99 | Don't know | 
                                    
                    
                        | 0 |  | 
                                    
                    
                        | 4 |  | 
                                    
                    
                        | 11 |  | 
                                    
                    
                        | 13 |  | 
                                    
                    
                        | 19 |  | 
                                    
                    
                        | 25 |  | 
                                    
                    
                        | 27 |  | 
                                    
                    
                        | 29 |  | 
                                    
                    
                        | 30 |  | 
                                    
                    
                        | 31 |  | 
                                    
                    
                        | 33 |  | 
                                    
                    
                        | 34 |  | 
                                    
                    
                        | 35 |  | 
                                    
                    
                        | 36 |  | 
                                    
                    
                        | 37 |  | 
                                    
                    
                        | 39 |  | 
                                    
                    
                        | 40 |  | 
                                    
                    
                        | 41 |  | 
                                    
                    
                        | 42 |  | 
                                    
                    
                        | 44 |  | 
                                    
                    
                        | 45 |  | 
                                    
                    
                        | 46 |  | 
                                    
                    
                        | 47 |  | 
                                    
                    
                        | 48 |  | 
                                    
                    
                        | 50 |  | 
                                    
                    
                        | 53 |  | 
                                    
                    
                        | 56 |  | 
                                    
                    
                        | 57 |  | 
                                    
                    
                        | 60 |  | 
                                    
                    
                        | 61 |  | 
                                    
                    
                        | 62 |  | 
                                    
                    
                        | 63 |  | 
                                    
                    
                        | 64 |  | 
                                    
                    
                        | 65 |  | 
                                    
                    
                        | 66 |  | 
                                    
                    
                        | 67 |  | 
                                    
                    
                        | 68 |  | 
                                    
                    
                        | 70 |  | 
                                    
                    
                        | 72 |  | 
                                    
                    
                        | 73 |  | 
                                    
                    
                        | 74 |  | 
                                    
                    
                        | 75 |  | 
                                    
                    
                        | 78 |  | 
                                    
                    
                        | 79 |  | 
                                    
                    
                        | 80 |  | 
                                    
                    
                        | 83 |  | 
                                    
                    
                        | 84 |  | 
                                    
                    
                        | 86 |  | 
                                    
                    
                        | 88 |  | 
                                    
                    
                        | 91 |  | 
                                    
                    
                        | 92 |  | 
                                    
                    
                        | 93 |  | 
                                    
                    
                        | 94 |  | 
                                    
                    
                        | 95 |  | 
                                    
                    
                        | 97 |  | 
                                    
                    
                        | 101 |  | 
                                    
                    
                        | 103 |  | 
                                    
                    
                        | 104 |  | 
                                    
                    
                        | 105 |  | 
                                    
                    
                        | 109 |  | 
                                    
                    
                        | 115 |  | 
                                    
                    
                        | 120 |  | 
                                    
                    
                        | 124 |  | 
                                    
                    
                        | 125 |  | 
                                    
                    
                        | 127 |  | 
                                    
                    
                        | 129 |  | 
                                    
                    
                        | 142 |  | 
                                    
                    
                        | 144 |  | 
                                    
                    
                        | 149 |  | 
                                    
                    
                        | 150 |  | 
                                    
                    
                        | 151 |  | 
                                    
                    
                        | 154 |  | 
                                    
                    
                        | 161 |  | 
                                    
                    
                        | 165 |  | 
                                    
                    
                        | 168 |  | 
                                    
                    
                        | 176 |  | 
                                    
                    
                        | 186 |  | 
                                    
                    
                        | 187 |  | 
                                    
                    
                        | 188 |  | 
                                    
                    
                        | 194 |  | 
                                    
                    
                        | 220 |  | 
                                    
                    
                        | 228 |  | 
                                    
                    
                        | 234 |  | 
                                    
                    
                        | 236 |  | 
                                    
                    
                        | 254 |  | 
                                    
                    
                        | 257 |  | 
                                    
                    
                        | 270 |  | 
                                    
                    
                        | 281 |  | 
                                    
                    
                        | 548 |  | 
                                    
                    
                        | 2319 |  | 
                                    
                    
                        | 2718 |  | 
                                    
                    
                        | 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.