| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 280 |
23%
|
| -88 | Refused | 1 |
0.1%
|
| -66 | Other | 3 |
0.2%
|
| 1 | Red | 147 |
12.1%
|
| 2 | Orange | 465 |
38.2%
|
| 3 | Yellow | 223 |
18.3%
|
| 4 | Green | 99 |
8.1%
|