| Value | Category |
|---|---|
| -9 | Don't know |
| -8 | Refusal |
| -7 | Does not apply |
| 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 | |
| 30 | |
| 35 | |
| 36 | |
| 40 | |
| 42 | |
| 44 | |
| 45 | |
| 46 | |
| 50 | |
| 52 | |
| 55 | |
| 60 | |
| 64 | |
| 65 | |
| 68 | |
| 69 | |
| 70 | |
| 73 | |
| 75 | |
| 78 | |
| 80 | |
| 85 | |
| 90 | |
| 94 | |
| 100 | |
| 105 | |
| 110 | |
| 113 | |
| 115 | |
| 117 | |
| 120 | |
| 126 | |
| 130 | |
| 137 | |
| 140 | |
| 145 | |
| 146 | |
| 147 | |
| 150 | |
| 155 | |
| 160 | |
| 162 | |
| 166 | |
| 172 | |
| 187 | |
| 200 | |
| 202 | |
| 250 | |
| 263 | |
| 270 | |
| 290 | |
| 300 | |
| 357 | |
| 400 | |
| 410 | |
| 439 | |
| 450 | |
| 470 | |
| 480 | |
| 500 | |
| 585 | |
| 600 | |
| 720 | |
| 846 | |
| 850 | |
| 900 | |
| 980 | |
| 983 | |
| 1000 | |
| 2000 | |
| 2006 | |
| 2619 | |
| Sysmiss |