| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0 | 345 |
16.4%
|
| 1 | 1 | 300 |
14.3%
|
| 2 | 2 | 310 |
14.8%
|
| 3 | 3 | 313 |
14.9%
|
| 4 | 4 | 206 |
9.8%
|
| 5 | 5 | 308 |
14.7%
|
| 6 | 6 | 61 |
2.9%
|
| 7 | 7 | 16 |
0.8%
|
| 8 | 8 | 7 |
0.3%
|
| 9 | 9 | 49 |
2.3%
|
| 10 | 10 | 39 |
1.9%
|
| 11 | 11 | 1 |
0%
|
| 12 | 12 | 3 |
0.1%
|
| 18 | 18 | 3 |
0.1%
|
| 30 | 30 | 1 |
0%
|
| 36 | 36 | 1 |
0%
|
| 48 | 48 | 1 |
0%
|
| 98 | Don't know | 137 |
6.5%
|