| Value | Category | Cases | |
|---|---|---|---|
| 9 | 9 | 11 |
1.9%
|
| 10 | 10 | 16 |
2.8%
|
| 11 | 11 | 12 |
2.1%
|
| 12 | 12 | 81 |
14%
|
| 13 | 13 | 123 |
21.2%
|
| 14 | 14 | 131 |
22.6%
|
| 15 | 15 | 114 |
19.7%
|
| 16 | 16 | 63 |
10.9%
|
| 17 | 17 | 17 |
2.9%
|
| 18 | 18 | 2 |
0.3%
|
| 19 | 19 | 1 |
0.2%
|
| 97 | Not Began | 1 |
0.2%
|
| 98 | Dont know | 7 |
1.2%
|