| Value | Category | Cases | |
|---|---|---|---|
| 1 | First quartile | 1742 |
33.9%
|
| 2 | Second quartile | 1367 |
26.6%
|
| 3 | Third quartile | 596 |
11.6%
|
| 4 | Fourth quartile | 283 |
5.5%
|
| 5 | Don't know | 1038 |
20.2%
|
| 6 | Refused | 113 |
2.2%
|