| Value | Category | Cases | |
|---|---|---|---|
| 0 | 650 |
11.7%
|
|
| 1 | 1177 |
21.1%
|
|
| 2 | 1420 |
25.5%
|
|
| 3 | 995 |
17.8%
|
|
| 4 | 348 |
6.2%
|
|
| 5 | 219 |
3.9%
|
|
| 6 | 44 |
0.8%
|
|
| 7 | 396 |
7.1%
|
|
| 77 | Don't know | 326 |
5.8%
|