| Value | Category | Cases | |
|---|---|---|---|
| 0 | 3 |
0.1%
|
|
| 1 | 6 |
0.3%
|
|
| 2 | 6 |
0.3%
|
|
| 3 | 7 |
0.3%
|
|
| 4 | 11 |
0.5%
|
|
| 5 | 13 |
0.6%
|
|
| 6 | 52 |
2.3%
|
|
| 7 | 112 |
4.9%
|
|
| 8 | 184 |
8.1%
|
|
| 9 | 406 |
17.9%
|
|
| 10 | 674 |
29.7%
|
|
| 11 | 398 |
17.5%
|
|
| 12 | 222 |
9.8%
|
|
| 13 | 33 |
1.5%
|
|
| 14 | 9 |
0.4%
|
|
| 15 | 18 |
0.8%
|
|
| 16 | 27 |
1.2%
|
|
| 17 | 9 |
0.4%
|
|
| 18 | 7 |
0.3%
|
|
| 19 | 3 |
0.1%
|
|
| 20 | 3 |
0.1%
|
|
| 77 | Don't know | 69 |
3%
|