| Value | Category |
|---|---|
| -9 | Don't know |
| -8 | Refused |
| -5 | Not Applicable |
| -3 | Missing |
| 13 | |
| 15 | |
| 17 | |
| 20 | |
| 22 | |
| 24 | |
| 26 | |
| 28 | |
| 31 | |
| 33 | |
| 35 | |
| 37 | |
| 39 | |
| 42 | |
| 44 | |
| 46 | |
| 48 | |
| 50 | |
| 52 | |
| 55 | |
| 57 | |
| 59 | |
| 61 | |
| 63 | |
| 66 | |
| 68 | |
| 70 | |
| 72 | |
| 74 | |
| 76 | |
| 79 | |
| 81 | |
| 83 | |
| 85 | |
| 87 | |
| 90 | |
| 92 | |
| 94 | |
| 96 | |
| 98 | |
| 100 | |
| 103 | |
| 105 | |
| 107 | |
| 109 | |
| 111 | |
| 114 | |
| 116 | |
| 118 | |
| 120 | |
| 122 | |
| 125 | |
| 127 | |
| 129 | |
| 131 | |
| 133 | |
| 135 | |
| 138 | |
| 140 | |
| 142 | |
| 144 | |
| Sysmiss |