| Value | Category |
|---|---|
| 0 | |
| 1 | |
| 2 | |
| 2.5 | |
| 3 | |
| 3.5 | |
| 4 | |
| 5 | |
| 6 | |
| 7 | |
| 8 | |
| 9 | |
| 9.5 | |
| 10 | |
| 11 | |
| 12 | |
| 13 | |
| 14 | |
| 15 | |
| 16 | |
| 17.5 | |
| 18 | |
| 20 | |
| 22 | |
| 25 | |
| 30 | |
| 32 | |
| 33.5 | |
| 35 | |
| 40 | |
| 51.5 | |
| 60 | |
| 70 | |
| 72 | |
| 75 | |
| 77 | refuse |
| 80 | |
| 88 | dont know |
| 90 | |
| 95 | |
| 99 | missing |
| 100 | |
| 115 | |
| 120 | |
| 150 | |
| 156 | |
| 175 | |
| 200 | |
| 240 | |
| 360 | |
| 375 | |
| 440 | |
| 700 | |
| 760 | |
| 1120 | |
| 1138 | |
| 1880 | |
| 2400 | |
| 2665 | |
| 4000 | |
| 10000 | |
| Sysmiss |