| Value | Category | 
|---|---|
| -9 | Don't know | 
| -8 | Refused | 
| -5 | Not applicable | 
| -3 | Missing | 
| 300 | |
| 310 | |
| 320 | |
| 330 | |
| 360 | |
| 600 | |
| 620 | |
| 640 | |
| 660 | |
| 780 | |
| 800 | |
| 830 | |
| 850 | |
| 960 | |
| 1000 | |
| 1040 | |
| 1100 | |
| 1200 | |
| 1230 | |
| 1240 | |
| 1250 | |
| 1260 | |
| 1270 | |
| 1280 | |
| 1290 | |
| 1300 | |
| 1310 | |
| 1320 | |
| 1330 | |
| 1340 | |
| 1350 | |
| 1360 | |
| 1370 | |
| 1380 | |
| 1400 | |
| 1410 | |
| 1420 | |
| 1440 | |
| 1450 | |
| 1480 | |
| 1500 | |
| 1600 | |
| 1660 | |
| 1670 | |
| 1700 | |
| 1850 | |
| 1920 | |
| 2100 | |
| 2700 | |
| 2920 | |
| 3800 | |
| 4800 | |
| 6371 | |
| Sysmiss |