| Value | Category | Cases | |
|---|---|---|---|
| 0 | 11 |
0.4%
|
|
| 1 | 618 |
24.5%
|
|
| 2 | 392 |
15.5%
|
|
| 3 | 255 |
10.1%
|
|
| 4 | 162 |
6.4%
|
|
| 5 | 76 |
3%
|
|
| 6 | 48 |
1.9%
|
|
| 7 | 268 |
10.6%
|
|
| 77 | Don't know | 692 |
27.4%
|