| Value | Category |
|---|---|
| -5 | other |
| -4 | missing data |
| -3 | refused to answer |
| -2 | not applicable |
| -1 | do not know |
| 4 | |
| 5 | |
| 6 | |
| 7 | |
| 8 | |
| 9 | |
| 10 | |
| 11 | |
| 12 | |
| 13 | |
| 14 | |
| 15 | |
| 17 | |
| 18 | |
| 20 | |
| 24 | |
| 25 | |
| 28 | |
| 30 | |
| 31 | |
| 32 | |
| 35 | |
| 36 | |
| 40 | |
| 41 | |
| 42 | |
| 44 | |
| 45 | |
| 47 | |
| 48 | |
| 49 | |
| 50 | |
| 52 | |
| 53 | |
| 54 | |
| 55 | |
| 56 | |
| 58 | |
| 60 | |
| 63 | |
| 64 | |
| 66 | |
| 70 | |
| 72 | |
| 75 | |
| 77 | |
| 78 | |
| 84 | |
| 85 | |
| 91 | |
| 92 | |
| 98 | |
| 170 | |
| 180 | |
| 216 | |
| 240 |