| Value | Category | 
|---|---|
| -9 | Don't Know | 
| -8 | Refused | 
| -5 | Not Applicable | 
| -3 | Missing | 
| 20 | |
| 27 | |
| 40 | |
| 50 | |
| 60 | |
| 70 | |
| 80 | |
| 99 | |
| 100 | |
| 110 | |
| 120 | |
| 130 | |
| 150 | |
| 180 | |
| 190 | |
| 200 | |
| 230 | |
| 240 | |
| 250 | |
| 260 | |
| 299 | |
| 300 | |
| 320 | |
| 350 | |
| 399 | |
| 400 | |
| 450 | |
| 460 | |
| 500 | |
| 600 | |
| 650 | |
| 669 | |
| 699 | |
| 700 | |
| 730 | |
| 800 | |
| 850 | |
| 1000 | |
| 1200 | |
| 1500 | |
| 1600 | |
| 2500 | |
| 2600 | |
| 3500 | |
| 3800 | |
| 4000 | |
| Sysmiss |