| Value | Category | Cases | |
|---|---|---|---|
| 1 | Grade 1 | 2346 |
70.5%
|
| 2 | Half way through Grade 1 | 502 |
15.1%
|
| 3 | Grade 2 | 78 |
2.3%
|
| 4 | Grade 3 | 154 |
4.6%
|
| 5 | Grade 4 | 247 |
7.4%
|