| Value | Category | 
                                    
                    
                        | 0 |  | 
                                    
                    
                        | 1 |  | 
                                    
                    
                        | 2 |  | 
                                    
                    
                        | 3 |  | 
                                    
                    
                        | 4 |  | 
                                    
                    
                        | 5 |  | 
                                    
                    
                        | 6 |  | 
                                    
                    
                        | 7 |  | 
                                    
                    
                        | 8 |  | 
                                    
                    
                        | 9 |  | 
                                    
                    
                        | 10 |  | 
                                    
                    
                        | 11 |  | 
                                    
                    
                        | 12 |  | 
                                    
                    
                        | 13 |  | 
                                    
                    
                        | 14 |  | 
                                    
                    
                        | 15 |  | 
                                    
                    
                        | 16 |  | 
                                    
                    
                        | 17 |  | 
                                    
                    
                        | 18 |  | 
                                    
                    
                        | 19 |  | 
                                    
                    
                        | 20 |  | 
                                    
                    
                        | 21 |  | 
                                    
                    
                        | 22 |  | 
                                    
                    
                        | 23 |  | 
                                    
                    
                        | 24 |  | 
                                    
                    
                        | 25 |  | 
                                    
                    
                        | 26 |  | 
                                    
                    
                        | 27 |  | 
                                    
                    
                        | 28 |  | 
                                    
                    
                        | 29 |  | 
                                    
                    
                        | 30 |  | 
                                    
                    
                        | 31 |  | 
                                    
                    
                        | 32 |  | 
                                    
                    
                        | 33 |  | 
                                    
                    
                        | 34 |  | 
                                    
                    
                        | 35 |  | 
                                    
                    
                        | 36 |  | 
                                    
                    
                        | 37 |  | 
                                    
                    
                        | 38 |  | 
                                    
                    
                        | 39 |  | 
                                    
                    
                        | 40 |  | 
                                    
                    
                        | 42 |  | 
                                    
                    
                        | 43 |  | 
                                    
                    
                        | 44 |  | 
                                    
                    
                        | 45 |  | 
                                    
                    
                        | 46 |  | 
                                    
                    
                        | 47 |  | 
                                    
                    
                        | 48 |  | 
                                    
                    
                        | 49 |  | 
                                    
                    
                        | 50 |  | 
                                    
                    
                        | 51 |  | 
                                    
                    
                        | 52 |  | 
                                    
                    
                        | 53 |  | 
                                    
                    
                        | 54 |  | 
                                    
                    
                        | 55 |  | 
                                    
                    
                        | 56 |  | 
                                    
                    
                        | 57 |  | 
                                    
                    
                        | 58 |  | 
                                    
                    
                        | 59 |  | 
                                    
                    
                        | 60 |  | 
                                    
                    
                        | 61 |  | 
                                    
                    
                        | 62 |  | 
                                    
                    
                        | 63 |  | 
                                    
                    
                        | 64 |  | 
                                    
                    
                        | 65 |  | 
                                    
                    
                        | 66 |  | 
                                    
                    
                        | 67 |  | 
                                    
                    
                        | 68 |  | 
                                    
                    
                        | 70 |  | 
                                    
                    
                        | 72 |  | 
                                    
                    
                        | 73 |  | 
                                    
                    
                        | 75 |  | 
                                    
                    
                        | 76 |  | 
                                    
                    
                        | 77 |  | 
                                    
                    
                        | 78 |  | 
                                    
                    
                        | 80 |  | 
                                    
                    
                        | 81 |  | 
                                    
                    
                        | 82 |  | 
                                    
                    
                        | 83 |  | 
                                    
                    
                        | 84 |  | 
                                    
                    
                        | 85 |  | 
                                    
                    
                        | 86 |  | 
                                    
                    
                        | 90 |  | 
                                    
                    
                        | 91 |  | 
                                    
                    
                        | 95 |  | 
                                    
                    
                        | 97 |  | 
                                    
                    
                        | 100 |  | 
                                    
                    
                        | 102 |  | 
                                    
                    
                        | 104 |  | 
                                    
                    
                        | 107 |  | 
                                    
                    
                        | 109 |  | 
                                    
                    
                        | 110 |  | 
                                    
                    
                        | 112 |  | 
                                    
                    
                        | 114 |  | 
                                    
                    
                        | 115 |  | 
                                    
                    
                        | 116 |  | 
                                    
                    
                        | 120 |  | 
                                    
                    
                        | 123 |  | 
                                    
                    
                        | 127 |  | 
                                    
                    
                        | 128 |  | 
                                    
                    
                        | 129 |  | 
                                    
                    
                        | 130 |  | 
                                    
                    
                        | 135 |  | 
                                    
                    
                        | 140 |  | 
                                    
                    
                        | 145 |  | 
                                    
                    
                        | 150 |  | 
                                    
                    
                        | 152 |  | 
                                    
                    
                        | 153 |  | 
                                    
                    
                        | 157 |  | 
                                    
                    
                        | 160 |  | 
                                    
                    
                        | 166 |  | 
                                    
                    
                        | 168 |  | 
                                    
                    
                        | 170 |  | 
                                    
                    
                        | 172 |  | 
                                    
                    
                        | 175 |  | 
                                    
                    
                        | 180 |  | 
                                    
                    
                        | 190 |  | 
                                    
                    
                        | 198 |  | 
                                    
                    
                        | 200 |  | 
                                    
                    
                        | 210 |  | 
                                    
                    
                        | 216 |  | 
                                    
                    
                        | 218 |  | 
                                    
                    
                        | 220 |  | 
                                    
                    
                        | 223 |  | 
                                    
                    
                        | 225 |  | 
                                    
                    
                        | 230 |  | 
                                    
                    
                        | 240 |  | 
                                    
                    
                        | 250 |  | 
                                    
                    
                        | 278 |  | 
                                    
                    
                        | 280 |  | 
                                    
                    
                        | 290 |  | 
                                    
                    
                        | 300 |  | 
                                    
                    
                        | 325 |  | 
                                    
                    
                        | 350 |  | 
                                    
                    
                        | 385 |  | 
                                    
                    
                        | 400 |  | 
                                    
                    
                        | 450 |  | 
                                    
                    
                        | 500 |  | 
                                    
                    
                        | 578 |  | 
                                    
                    
                        | 600 |  | 
                                    
                    
                        | 2147483625 | don't know | 
                                    
                    
                        | 2147483639 | refusal | 
                                    
                    
                        | 2147483640 | skipped | 
                                    
                    
                        | 2147483645 | .x. censored | 
                                    
                    
                        | 1001 | .R | 
                                    
                    
                        | 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.