| Value | Category | Cases | |
|---|---|---|---|
| 1 | First quartile | 680 |
26.7%
|
| 2 | Second quartile | 861 |
33.8%
|
| 3 | Third quartile | 472 |
18.5%
|
| 4 | Fourth quartile | 414 |
16.2%
|
| 5 | Don't know | 92 |
3.6%
|
| 6 | Refused | 30 |
1.2%
|