| Value | Category |
|---|---|
| 1 | 0 |
| 2 | 0.990000009536743 |
| 3 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 4 |
| 7 | 5 |
| 8 | 6 |
| 9 | 7 |
| 10 | 8 |
| 11 | 9 |
| 12 | 10 |
| 13 | 12 |
| 14 | 15 |
| 15 | 20 |
| 16 | 21 |
| 17 | 25 |
| 18 | 30 |
| 19 | 40 |
| 20 | 42 |
| 21 | 50 |
| 22 | 100 |
| 23 | 150 |
| 24 | Don't know |
| 25 | Refused to answer |
| 26 | Outlier set to missing |
| 27 | Inconsistency set to missing |
| 28 | Not applicable |