| Value | Category | Cases | |
|---|---|---|---|
| 1 | First quartile | 905 |
29%
|
| 2 | Second quartile | 855 |
27.4%
|
| 3 | Third quartile | 740 |
23.7%
|
| 4 | Fourth quartile | 357 |
11.4%
|
| 5 | Don't know | 217 |
6.9%
|
| 6 | Refused | 50 |
1.6%
|