| Value | Category | Cases | |
|---|---|---|---|
| 1 | Grade 1 | 9 |
9.7%
|
| 2 | Grade 2 | 8 |
8.6%
|
| 3 | Grade 3 | 11 |
11.8%
|
| 4 | Grade 4 | 11 |
11.8%
|
| 5 | Grade 5 | 14 |
15.1%
|
| 6 | Grade 6 | 6 |
6.5%
|
| 7 | Grade 7 | 7 |
7.5%
|
| 8 | Grade 8 | 4 |
4.3%
|
| 9 | PP1 | 9 |
9.7%
|
| 10 | PP2 | 14 |
15.1%
|