| Value | Category | Cases | |
|---|---|---|---|
| 1 | First quartile | 678 |
32.2%
|
| 2 | Second quartile | 594 |
28.2%
|
| 3 | Third quartile | 293 |
13.9%
|
| 4 | Fourth quartile | 140 |
6.7%
|
| 5 | Don't know | 361 |
17.1%
|
| 6 | Refused | 39 |
1.9%
|