| Value | Category |
|---|---|
| 1 | 16 - 17 years |
| 2 | 18 - 20 years |
| 3 | 21 - 25 years |
| 4 | 26 - 29 years |
| 5 | 30 - 35 years |
| 6 | 36 - 39 years |
| 7 | 40 - 45 years |
| 8 | 46 - 49 years |
| 9 | 50 - 55 years |
| 10 | 56 - 59 years |
| 11 | 60 - 65 years |
| 12 | 66+ years |
| 13 | Refused to answer |
| 14 | Don't Know |
| 15 | Not Applicable |