| Value | Category |
|---|---|
| -9 | Don't know |
| -8 | Refused |
| -5 | Not Applicable |
| -3 | Missing |
| 0 | |
| 2 | |
| 10 | |
| 15 | |
| 16 | |
| 18 | |
| 19 | |
| 20 | |
| 22 | |
| 23 | |
| 25 | |
| 28 | |
| 29 | |
| 30 | |
| 31 | |
| 32 | |
| 33 | |
| 34 | |
| 35 | |
| 36 | |
| 38 | |
| 39 | |
| 40 | |
| 43 | |
| 45 | |
| 47 | |
| 50 | |
| 52 | |
| 55 | |
| 56 | |
| 58 | |
| 60 | |
| 62 | |
| 65 | |
| 67 | |
| 70 | |
| 72 | |
| 74 | |
| 75 | |
| 78 | |
| 80 | |
| 85 | |
| 87 | |
| 89 | |
| 90 | |
| 95 | |
| 100 | |
| 105 | |
| 116 | |
| 120 | |
| 130 | |
| 140 | |
| 145 | |
| 150 | |
| 160 | |
| 170 | |
| 180 | |
| 187 | |
| 190 | |
| 200 | |
| 210 | |
| 220 | |
| 225 | |
| 240 | |
| 250 | |
| 260 | |
| 275 | |
| 280 | |
| 300 | |
| 360 | |
| 400 | |
| 480 | |
| 500 | |
| 600 | |
| 660 | |
| 800 | |
| Sysmiss |