| Value | Category | Cases | |
|---|---|---|---|
| 1 | 3% | 36 |
3.5%
|
| 2 | 2.6% | 91 |
8.8%
|
| 3 | 6% | 659 |
63.6%
|
| 4 | 11% | 53 |
5.1%
|
| 9 | Don’t know | 197 |
19%
|