| Value | Category |
|---|---|
| -9 | Don't know |
| -8 | Refused |
| -5 | Not Applicable |
| -3 | Missing |
| 0 | |
| 6 | |
| 12 | |
| 15 | |
| 17 | |
| 20 | |
| 25 | |
| 28 | |
| 30 | |
| 32 | |
| 35 | |
| 40 | |
| 42 | |
| 45 | |
| 46 | |
| 49 | |
| 50 | |
| 51 | |
| 52 | |
| 54 | |
| 55 | |
| 56 | |
| 60 | |
| 63 | |
| 65 | |
| 70 | |
| 74 | |
| 75 | |
| 79 | |
| 80 | |
| 85 | |
| 87 | |
| 89 | |
| 100 | |
| 120 | |
| 124 | |
| 130 | |
| 138 | |
| 140 | |
| 150 | |
| 158 | |
| 200 | |
| 210 | |
| 220 | |
| 230 | |
| 235 | |
| 240 | |
| 250 | |
| 260 | |
| 270 | |
| 280 | |
| 290 | |
| 300 | |
| 310 | |
| 350 | |
| 360 | |
| 380 | |
| 390 | |
| 398 | |
| 400 | |
| 420 | |
| Sysmiss |