| Value | Category | Cases | |
|---|---|---|---|
| Grade 1 | 11 |
4.7%
|
|
| Grade 10 | 20 |
8.5%
|
|
| Grade 11 | 18 |
7.7%
|
|
| Grade 12 | 7 |
3%
|
|
| Grade 2 | 27 |
11.5%
|
|
| Grade 3 | 26 |
11.1%
|
|
| Grade 4 | 20 |
8.5%
|
|
| Grade 5 | 19 |
8.1%
|
|
| Grade 6 | 21 |
8.9%
|
|
| Grade 7 | 25 |
10.6%
|
|
| Grade 8 | 24 |
10.2%
|
|
| Grade 9 | 17 |
7.2%
|