| Value | Category | Cases | |
|---|---|---|---|
| 0 | 468 |
14.1%
|
|
| 1 | 615 |
18.6%
|
|
| 2 | 712 |
21.5%
|
|
| 3 | 593 |
17.9%
|
|
| 4 | 288 |
8.7%
|
|
| 5 | 159 |
4.8%
|
|
| 6 | 78 |
2.4%
|
|
| 7 | 395 |
11.9%
|
|
| 9 | Don't know | 2 |
0.1%
|