| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0 | 6 |
0.1%
|
| 1 | 1 | 81 |
1.2%
|
| 2 | 2 | 261 |
3.9%
|
| 3 | 3 | 322 |
4.8%
|
| 4 | 4 | 413 |
6.2%
|
| 5 | 5 | 699 |
10.5%
|
| 6 | 6 | 403 |
6.1%
|
| 7 | 7 | 438 |
6.6%
|
| 8 | 8 | 882 |
13.3%
|
| 9 | 9 | 836 |
12.6%
|
| 10 | 10 | 1273 |
19.1%
|
| 11 | 11 | 238 |
3.6%
|
| 12 | 12 | 620 |
9.3%
|
| 98 | don't know | 183 |
2.7%
|